Welcome to the Zhihu Inc. fourth quarter and full-year 2023 financial results conference call. At this time, all participants are in listen-only mode. After the speaker's presentation, there will be a Q&A session. Today's conference is being recorded. At this time, I would like to turn the conference over to Yolanda Liu, Director of Investor Relations. Please go ahead, ma'am. Thank you, operator. Hello, everyone. Welcome to our fourth quarter and full-year 2023 financial results conference call. Participants on today's call include Mr. Zhou Yuan, our founder, our chairman, and Chief Executive Officer, and Mr. Wang Han, our Chief Financial Officer. Before we continue, please note that today's discussion will contain forward-looking statements made under the safe harbor provisions of the U.S. Private Securities and Litigation Reform Act of 1995. Forward-looking statements involve inherent risks and uncertainties. As such, other results may be materially different from the views expressed today. Full information regarding these and other risks and uncertainties is included in our public filings with the U.S. SEC and the Hong Kong Stock Exchange. The company does not assume any obligation to update any forward-looking statements except as required under applicable law. During today's call, management will also discuss certain non-GAAP financial measures for comparison purpose only. For a definition of non-GAAP financial measures and a reconciliation of GAAP to non-GAAP financial results, please see the earnings release issued earlier today. In addition, a webcast replay of this conference call will be available on our website at ir.zhihu.com. I will now turn the call over to Mr. Wang Han, CFO of Zhihu. Han, please go ahead. Thank you, Yolanda. Hello, everyone. Thank you for joining Zhihu's fourth quarter and full-year 2023 earnings call. I'm pleased to deliver today's opening remarks on behalf of Mr. Zhou Yuan, founder, chairman, and CEO of Zhihu. In 2023, we faced a blend of challenges and opportunities. Despite a dynamic macro environment and competitive industry landscape, we achieved substantial progress in commercialization and efficiency, both in the first quarter and throughout the year. Furthermore, we made considerable strides in improving our bottom line while actively exploring and investing in AI technology. Our primary focus in 2023 was motivating our content creators through a variety of incentive plans. As a result, the cumulative content creators on our platform increased by 13% year-over-year, reaching 71.3 million by the end of 2023. The cumulative pieces of content grew to 774.7 million, up 19.3% year-over-year. Additionally, the average MAUs for the full-year increased by 4% year-over-year. Our monetization progress remained robust throughout the year. We achieved a 16.5% year-over-year increase in our full-year revenues to RMB 4,199 million. With enhanced operating efficiency, our overall gross margin for 2023 improved by more than four percentage points year-over-year to 54.7%. Furthermore, our operating loss margin for 2023 significantly narrowed by 19 percentage points, and adjusted net loss decreased by 44.9%, both on a year-over-year basis. During the fourth quarter, our dedication to user growth, resource allocation, and operating efficiency improvements began to pay off. As high-quality content continued to thrive across the community, we proactively refined our user growth strategy and significantly reduced acquisition costs for new users. Our focus shifted towards driving efficient and sustainable organic user growth by elevating engagement and retention rates among our highly active core users. We also continued to fortify our monetization model's resilience through diverse growth drivers. Our total revenue for the first quarter of 2023 reached RMB 1.1 billion, primarily fueled by the strong growth in our paid membership and vocational training business. Our increasing brand and influence and expanded program offerings has strengthened the division's competitiveness, extending our revenue growth beyond Zhihu Community. Together, the two segments achieved a robust revenue growth of 28.3% year-over-year for the first quarter of 2023. Enhancing cost control effectiveness and operating efficiency remain as our key strategic priorities during the fourth quarter. We continue to invest judiciously in cutting-edge technologies such as AI, while optimizing our fixed cost structure. These initiatives resulted in an expanded gross margin of 59.1% for the first quarter. We also drove a significant 31.9% year-over-year reduction in adjusted net loss, which reached its narrowest quarterly level since our U.S. IPO. As we move through 2024, we'll further optimize our financial performance while elevating trustworthiness within the Zhihu community. We're confident that in the area of AI-generated content, users will increasingly value professional, in-depth, and authentic content, as well as discussion and feedback among real users. By fostering an environment of trust, we can stimulate user interaction and inspire content creators' passion and creativity, ultimately driving organic community growth. Meanwhile, we also believe that appropriate application of AI large language models can improve user experience and strengthen the feedback mechanism for content creators, enhancing our community's atmosphere and operating efficiency. Now, I would love to delve into the details of our initiatives and achievements in 2023 across content and creators, as well as our commercialization progress. Let's start with our content and content creators. As I just mentioned, we revisited our user growth strategy in 2023 to promote organic community growth through high-quality content and a thriving community ecosystem. We shifted our focus to boosting our core users' activeness and retention rate. We're also reducing user acquisition costs. Consequently, our average MAUs in the fourth quarter were 99 million, a slight decrease of 1.6% year-over-year. However, we reduced user acquisition costs in fourth quarter by more than 40% year-over-year, accounting for less than 35% of total promotion and advertising expenses. This shift drove sequential increases in our daily active users. Additionally, in fourth quarter, we saw a significant year-over-year improvement in both the content creation contribution rate and next month's retention rate for our highly active users. Regarding content, we further refined our content operations by deeply integrating training topics and user demands for continually strengthening recommendation technology. This initiative, combined with our diverse incentive plans for content creators, propelled rapid growth in our community's high-quality content pool. At the end of 2023, the cumulative pieces of content increased to 774.7 million, among which the cumulative number of Q&As reached 592.8 million. We also leveraged Zhihu's position as China's leading content-centric community to encourage extensive professional discussions on trending topics. For instance, in 2023, the cumulative discussion volume related to generative AI and large language models and their applications surpassed 1.2 billion across the Zhihu community. A distinguished group of founders and key developers from leading LLM companies joined the discussion on Zhihu, contributing their valuable insights. Science and engineering-related content was another standout, increasing by 85.6% year-over-year in 2023. Our High-end Plan continues to serve as a crucial incentive for content creators. Since the release of High-End 5.0 in May 2023, we have consistently promoted professional content creation, driving creativity and productivity through initiatives such as our Blue Label Certification. In 2023, this program covered 130 verticals, with nearly 200,000 users certified. Furthermore, we provided a broad array of avenues for content creators to earn income. During the fourth quarter, the total number of content creators who earned income on our platform increased by 17.4% year-over-year. As I previously mentioned, one of our top priorities for 2024 is to enhance the trustworthiness within the Zhihu community. To that end, we have been progressively empowering our community with AI, leveraging large language models to better connect human knowledge, experience, and insights, and make them more accessible to a broader audience. At our recent Discovery conference on March 20, we introduced a new search feature called Discovery, leveraging our Zhihait u AI large language model. This significant advancement in search scenario allows our users to initiate discussions directly with content creators across the entire Zhihu community with a single question. The content featured in discovery comes from professional content creators within the community. This feature facilitates more efficient knowledge sharing by enhancing search efficiency and a common consumption experience for Zhihu users. We're also providing feedbacks to our content creators. With enhancements like Discovery, we aim to strengthen community development and drive the continued emergence of high-quality, trustworthy content. We firmly believe that a combination of professional, in-depth, authentic content, a culture of sincerity and respect, as well as our transparent and efficient information mechanism, will further enhance our community's trustworthiness. This, in turn, will drive user engagement and retention throughout the Zhihu community, fueling the efficient and sustainable organic growth of our user base in the long run. Moving into our multi-engine commercialization. In the first quarter, our total revenue increased by 2.2% year-over-year to RMB 1.1 billion, empowered by our thriving community, paid membership, and vocational training maintained their robust growth. Together, they expanded our monetization capability beyond the Zhihu community, contributing more than 50% to total revenue for both the fourth quarter and full-year 2023. The strong performance underscores the resilience and effectiveness of our business models and diversified our revenue growth engines. In terms of revenue growth by sector, vocational training and paid membership revenues led the way, increasing by 28.3% to RMB 625.2 million. Notably, revenue from vocational training doubled compared to the fourth quarter of last year. Its revenue contribution remained at over 10% throughout 2023. While marketing services had yet to fully recover on a yearly basis, it picked up sequentially, with quarter-over-quarter growth of 21.5% in the fourth quarter. Particularly, display-based advertising delivered sequential growth of over 33%. In addition, we saw rapid year-over-year growth in various verticals that requires a longer decision-making process, such as 3C and home appliance. This highlights the vital role of Zhihu's professional in-depth and authentic content in consumer decision-making. We continue to streamline and upgrade our CCS business offerings throughout 2023 to drive further marketing efficiency improvements and unlock greater commercial potential in this segment, business segment. The increasingly diverse premium content has contributed to consistent growth in our paid membership business. In first quarter, our paid membership revenue increased by 13.3% year-over-year to RMB 455.9 million. In first quarter of 2023, average monthly subscribers reached 14.2 million, representing a 9.2% year-over-year increase. Average revenue per user, ARPU, also improved year-over-year. There were two primary growth drivers. First, the expansion of both our high-quality content categories and our target audience. Zhihu's vast and diverse library of premium content encompasses not only knowledge-based content like columns, research papers, and e-books, but also short stories that are gaining popularity among users. As of end of 2023, our content library amassed 4.9 million visits, an increase of 15.7% year-over-year. Additionally, the number of premium content creators who earned income on Zhihu in 2023 Q4 surged by 36.8% year-over-year. Joining our massive content library, many of our short stories originate from professional discussion in Zhihu Q&A community. Since the launch of Zhihu Yanyan Story in May 2023, it has emerged as a frontrunner in a multi-billion-dollar short story market in terms of both content production and consumption. Today, the cumulative number of content creators on Yanyan Story exceeds 600,000, with accumulated of over 100,000 short stories published. Topical coverage has expanded beyond the platform's original romance, professional, and suspense genres, to encompass over 180 subcategories. While the common categories popular among female users continue to grow, we're also expanding into categories favored by male users, such as science fiction and mystery. Meanwhile, the Zhihu community's financial rewards effectively motivated our premium content creators. Over 100 paid content creators on Zhihu has earned more than RMB 1 million. Also, in 2023, the average monthly income of signed content creators on Yanyan was close to RMB 10,000, nearly doubling the average income on other platforms. Second, media format diversification and IP monetization have continued to bolster our users' long-term value. In the first quarter, we introduced a variety of formats to boost content consumption, including audiobooks and radio dramas. These initiatives are carefully designed to provide our subscribers with an immersive and fulfilling storytelling experience. By leveraging our expanding media formats and deepening our penetration across the value chain, we're expanding from short story market to a broader IP monetization market. The success of our short form blockbusters clearly reflects strong IP development potential within the Yanyan Story platform. Moving forward, we will harness the power of AI large language model technology to explore and develop integrated content formats, further unleashing the value of Zhihu's premium content. This approach will help enhance our subscribers' LTV in the long term. Our vocational training business continued to grow robustly with first quarter revenues surged by 100.1% year-over-year. Looking ahead, we officially announced our development strategy, focusing on digital empowerment for our Zhi Xuetang brand at our annual Zhihu Education Conference in January 2024. Zhi Xuetang is a vocational training platform dedicated to providing comprehensive and practical learning services for new generation professionals throughout their lifelong personal development journey. Currently, its expanded course offerings over three main categories: academic improvements, such as postgraduate exams and English proficiency tests. Career enhancements, such as CFA, accounting, and ESG exams. And other vocational skills and interests, such as writing, IT skills, and AGI courses. The vocational training sector offers immense opportunities for advancing digitalization. AI large language models are poised to revolutionize the industry, leading to efficiency improvements and significant shift in user experience. By leveraging AI LLM and AI agent applications in vocational training scenarios, we can advance the digitalization of processes such as job selection, exam practice, and homework correction. Our vocational training business success underscores Zhihu's unique position. We started as a community, but we are expanding beyond it. Moreover, its rapid revenue growth will bring us greater scale advantages in terms of cost dilution and efficiency improvement. We will continue to control and optimize this business costs and expenses to continually boost its overall operating efficiency. In the first quarter, marketing services revenue decreased by 18.7% year-over-year, but increased by 21.5% quarter-over-quarter. The year-over-year decline can be attributed to the challenging economic environment and heightened market competition, as well as our proactive efforts to prioritize user experience by reducing the distribution of commercial content that may negatively impact our users. However, the cornerstone verticals of our community continue to demonstrate robust growth. This reaffirms our core users' recognition of our professional content value, particularly in the current environment, emphasizing cost-effective and rational consumption. Specifically, the 3C vertical grew by nearly 40% year-over-year in the first quarter of 2023. This trend is also evident in other consumer verticals involving significant decision-making processes, such as home renovation, health, and outdoor activities, which appeals to our core users. Zhihu's unique content advantages and ongoing product efficiency upgrades empower brands and merchants to gain deep insights into users' evolving mindsets, allowing them to influence decision-making and purchase behavior. Furthermore, we have established a feedback mechanism for data collaborations with e-commerce platforms like Taobao and JD.com, leveraging virtualized data to help brands and merchants achieve their business objectives more effectively by boosting add-to-cart rates, store visits, and category penetration rates, as well as lowering customer acquisition costs. Our market services made substantial progress during the Double Eleven period, with the average conversion rate from Zhihu to brand online stores reached 6% across our verticals. Moreover, both transaction rates and new customer acquisition rates outperformed the industry. As we progress through 2024 and elevate the community's trustworthiness, we will also continue to build out our scientific trust-based marketing system across two primary aspects. First, we will continue to upgrade our underlying capabilities to further improve the efficiency of commercial content recommendation. Since the beginning of this year, we have sought to cover major advertising categories with a library of rated and labeled SPUs, so that we can establish a user evolution system empowered by AI. So this will allow more suitable products to be recommended by a broader base of content creators. Second, we will strive to maintain a high level of user experience, especially for our highly active users. If a user submits a feedback indicating no interest for a piece of content, the user will no longer see commercial content for that product. Moving on to our key strategy for 2024. Enhancing operating efficiency and accelerating profitability remain our core strategic objectives for sustainable growth. Alongside ongoing efforts to improve our commercialization efficiency, we're committed to optimizing our cost and incentive structure. Efficiency will be a pivotal performance indicator at each BU level. This approach will expedite our journey towards profitability. Meanwhile, we'll prioritize initiatives that contributes significantly to the community's long-term growth and sustainability. Additionally, we will deepen our commitment to protecting our core users' engagement and creative contribution, reflecting the growing value we place on our trustworthy community culture and professional, in-depth, and authentic content. Finally, in terms of AI investment, we'll shift our focus to developing application scenarios. We will presently integrate AI into our diverse, professional, and trustworthy community to provide Zhihu users with efficient access to our massive library of trustworthy answers and unlock greater expansion opportunities beyond it. This concludes Mr. Yuan's remarks. Now, I will review the details of our fourth quarter financials. For a complete overview of our fourth quarter and full-year 2023 results, please see our press release issued earlier today. While we continue to face various challenges, we've remained resilient and devoted to our multi-engine monetization strategy. Our total revenue increased by 2.2% and 16.5% year-over-year for fourth quarter and full-year, respectively. We're also pleased to deliver measurable progress in refining our cost controls and operating leverage, achieving a record high gross margin since our US IPO and a significantly narrowed net loss for the fourth quarter. Our paid membership revenue for the quarter increased 13.3% year-over-year to RMB 555.9 million. This growth was primarily driven by continued expansion of our subscribers, which increased by 9.2% year-over-year to 14.2 million, as a result of content enhancement and user experience improvement. Our vocational training business revenue for the fourth quarter surged by 100.1% year-over-year to RMB 169.3 million. This impressive growth can be attributed to our ongoing efforts to expand our course offerings. All our courses are specifically designed to meet our users' evolving demands, covering areas such as academic improvement, career advancement, and other vocational skills and interests. We continue to garner market recognition for our programs and drive its sustainable development. The overall macro environment and uncertainties in the advertising market pressured our marketing services throughout 2023. In fourth quarter, marketing services revenue declined by 18.7% year-over-year. However, it recovered by 21.5% quarter-over-quarter, driven by our product enhancement as sustained increasing performance in verticals such as IT and 3C and home supply. Gross profit for the first quarter increased by 7.1% year-over-year to RMB 673.1 million, with gross margin expanding to 59.1%, its highest level since our US IPO. Gross margin improvement reflects our enhanced monetization efforts, as well as improved efficiency in cloud services and bandwidth utilization. Total operating expenses were RMB 851.3 million for the fourth quarter, compared with RMB 844.8 million for the same period of 2022. Selling and marketing expenses for the fourth quarter increased to RMB 527.6 million from RMB 509.2 million for the same period of 2022... as we continue to invest in product and service, offering promotions with a prudent ROI-based approach. Research and development expenses slightly increased to RMB 232.6 million for the first quarter, from RMB 212.5 million for the same period of 2022. The increase was primarily attributable to our increased spending on technology innovation. General and administrative expenses for the quarter decreased by 26% to RMB 91.1 million, from RMB 123.1 million in the same period of 2022. Primarily attributable to a decline in personnel-related expenses as we continue to improve operating efficiency. Driven by our ongoing efforts to control costs and enhancing operating efficiency, our GAAP net loss per quarter narrowed significantly year-over-year by 42.6% to RMB 103.1 million. Our non-GAAP adjusted net loss, which primarily excludes share-based compensation expenses and amortization of intangible assets resulting from business acquisitions, narrowed by 31.9% year-over-year to RMB 91.3 million for the first quarter. Moving forward, as we continue to optimize our cost structure, control our operating expenses, and record growth, driven by our multi-engine and monetization model, we expect to further enhance our operating leverage. As of December 31, 2023, we had cash and cash equivalents, term deposit and short-term investment of RMB 5.5 billion, compared with RMB 6.3 billion as of December 31, 2022. Also, as of December 31, 2023, we had repurchased 26.3 million Class A ordinary shares through the ADS, for a total of $58.5 million on both the New York Stock Exchange and the Hong Kong Stock Exchange. This concludes my prepared remarks on our financial performance for this quarter. Let's turn the call over to the operators for the Q&A session. Thank you. This is the conference operator. We will now begin the question and answer session. Anyone who wishes to ask a question may press star and one on their touchtone telephone. We will pause for a moment as participants are joining the queue. The first question is from Vicky Wei with Citi. Please go ahead. [Foreign language] Thanks, management, for taking my question. Will management share some color about the key strategic focus of Zhihu for 2024? Thank you. [Foreign language] Thank you, Vicky, for the question. This is Zhou Yuan, CEO of Zhihu. Moving forward to 2024, our key strategic focus will be on achieving profitability as soon as possible. To achieve this, we will optimize cost and expense structures to prioritize efficiency as the pivotal goal across our daily operations and for each business unit. [Foreign language] And secondly, our key focus will be to protect the professional and in-depth consumption experience for Zhihu's core users. We will focus on to enhance the retention and reputation for our high quality and trustworthy content, and to enhance a sincere and friendly atmosphere for communication between individuals. [Foreign language] Last but not least, we will continue to focus, to shift our focus on AI application to different, real application scenarios. We will continue to enhance the search function, the convenience and the efficiency of our search function, and also, to establish a feedback system that connects the designing and establishing of these functions with the feedback system. [Foreign language] To summarize, in the next year, we will focus on our key objective that we started from a community, but we are expanding beyond it. And moving forward around our multi-engine growth, we will try to narrow the losses for some of our business that is still emerging, and to achieve the overall profitability in the future. Thank you for your question. Hey, operator. The next question is from Xueqing Zhang from CICC. Please go ahead. [Foreign language] Thanks for taking my question. The company just mentioned that the priority goal in 2024 is to achieve profitability. So, what's our timetable for breakeven? And, could management elaborate a bit more on the path to achieve it? Thank you. [Foreign language] Thank you, Xie Ting, for the question. This is Wang Han, CFO of Zhihu. To first start, we aim to achieve breakeven, quarterly breakeven on the non-GAAP net loss, net profit level in the first quarter this year. [Foreign language] As we all know that Zhihu has grown into a widely known name over the past 14 years, I believe many of you on this call, like myself, have been spontaneously opening the Zhihu app on our phone, rather than being directed through any promotional link. [Foreign language] Before I joined this company, I believe that Zhihu possesses a large base of genuine and loyal users. After I joined the company, I have reconfirmed this fact with numbers. The majority of active users in 2023 are those who have been with Zhihu since 2022, which is even larger than I previously expected. [Foreign language] Additionally, as a user-generated content community, Zhihu has much lighter operating costs compared to other business models of other companies. Our gross margin has maintained at over 50% for five consecutive quarters, reaching 59.1% in the fourth quarter last year. It is obvious that Zhihu, whose core users will contribute notably high profits. [Foreign language] In other words, as long as we proactively and prudently reduce brand promotion expenses with lower ROI, prioritize user quality over quantity, we believe that Zhihu can continue to narrow losses and progress towards profitability. [Foreign language] Meanwhile, in terms of our commercialization model, Zhihu has developed its own approach, which breaks through the limits of user scale by leveraging the community's advantages. Our Yanyan Story and Zhi Xuetang brand has shown us great potential on this regard. [Foreign language] We also expect similar potentials with our AI's empowered search discovery function. The real-time conversion-based interaction, built on top of our high quality long form text and graphic Q&A, can unlock greater user and commercial potentials. [Foreign language]. To summarize, Zhihu will gradually explore a path to scalable profitability that differs from other social media platforms. Thank you. The next question is from Daisy Chen with Haitong International. Please go ahead. [Foreign language] I'll translate myself. Thanks management for taking my question. First of all, congratulations on the remarkable achievement of Zhihu's efficiency improvement strategy. I saw that the Q4 operation also narrowed to a single digit level since 2021. But my question is about the membership business. I noticed that the growth rate of the monthly paid users seems decelerate in recent two quarters, but the number of the MPUs and the pay ratios still remains about 14 million and 40% this quarter. Can I ask about how the management considers about the ceilings of the paid users, and how does you, how does management expect growth rates of the membership business in the next one or two quarters or two years, and what are the resounding drivers? Thank you. [Foreign language] Thank you, Daisy, for the question. This is Wang Han, CFO of Zhihu. I understand your question may involve three underlying sub-questions. Firstly, whether the percentage of paying members to Zhihu's MAU is already become really, relatively high. Secondly, is the potential growth ceiling of the short story sector. Thirdly, would be the competitive landscape within the online literature sector. [Foreign language] Firstly, the traditional logic of paying members is based on the concept of converting a subset of users from the entire user base. The ceiling would be the total number of users. [Foreign language] However, Zhihu has pioneered a new growth trajectory for paying member growth. Zhihu's premium content can attract users beyond the community to subscribe within the Zhihu community. It not only eliminates the growth ceiling imposed by user base within the app, but also brings in additional users to the community. [Foreign language] In addition, these users' consumption of non-story contents actually surpass that of the story contents, driving the overall content consumption growth. [Foreign language] Secondly, regarding the competitive landscape, Zhihu is the largest platform to both produce and consume short stories across the entire Internet. It is the preferred platform for many short story content creators to submit their works. Zhihu's leading market position can be attributed to two factors: the support from the community and our distinctive value proposition. [Foreign language] Content creators of Zhihu can find inspiration, engage in topic discussion, and develop plots in the course of Q&A discussion to naturally create innovative, high quality, and high volume contents. This value of acquisition of ecosystem is irreplaceable. [Foreign language] Additionally, most of the online literature apps available in the market operates through an advertising model, focusing on maximizing users' time spent, often resulting in lengthy, slow-paced, and low information density. [Foreign language] In contrast, Zhihu operates through a subscription model, which prioritizes the delivery of high quality content that users are willing to pay for. This unique value proposition has established Zhihu's distinct content, characteristics, and value position in the market. [Foreign language] In terms of growth ceiling, the short story segment represents emerging sector, where Zhihu has taken part in establishing it as a pioneer. We have been actively expanding and striving to expand its ceiling. [Foreign language] Currently, our premium content primarily consists of text and graphic-based formats. However, there is a larger audience base and greater commercial potential in audio and visual content, such as radio play, audiobooks, and short drama. [Foreign language] Short stories actually share some similarities with short drama than longer narratives. Zhihu stories are known for its brevity, engaging plots, rapid creation, and real-world relevance. These are essential elements to produce blockbuster short dramas. We already possess them. [Foreign language] We recently announced a partnership with Kuaishou in the area of short drama. A great array of high quality short story IPs will be increasingly valuable for Zhihu. Some of the short drama adapted from Zhihu IPs have already achieved remarkable market performance, and we anticipate more success in the future. [Foreign language] Additionally, revenue from our IP copyrights currently only represents a small percentage of our total revenue. As the market increasingly recognizes the value of our in-house IP, revenue share from film and television copyrights will gradually increase. Thank you. Hey, operator, we can continue with the next question, please. Thank you. The next question is from Eileen Lin with China Renaissance. Please go ahead. [Foreign language] Thanks for taking my question. I have a question related to education. Can management share more color on Zhihu's education development, such as student base, strategic, strategic focus, and how AI can be integrated into the education business? Thank you. [Foreign language] Thank you for your question. This is Zhou Yuan, CEO of Zhihu. As we all know that our vocational training business has been growing rapidly in the recent quarters, and it has achieved synergies between our self-operated vocational training business and our acquired vocational training business. [Foreign language] So firstly, our self-operated business is closely tied to our community, yielding higher profits and will swiftly responding to evolving user demands.... While our acquired business segments offers greater demand certainty and larger addressable market. [Foreign language] Our community has continually empowered our vocational training business. Firstly, we will be able to discover the specific demands, the evolving demands of our users, and with and achieve greater certainty in terms of our course offerings compared to other industry players. [Foreign language] For example, some of our cornerstone course offerings, for example, the writing courses, the multimedia training courses, the artificial general intelligence courses. They actually stemmed from the Q&A discussions within the community and cater to the evolving demands of our users. [Foreign language] In the future, we will continue to leverage our advantages to expand our course offerings, especially to expand beyond the evolving needs and also the greater the needs with the demand space, greater certainty for our course. [Foreign language] Beyond our community empowerment, the users and content creators within the community can not only inspire and support the research and development of our new course offerings, but also empower multiple existing premium courses. [Foreign language] Our labor productivity stays at the top rank in the industry, and as our course offerings become mature, the scale of economies will continue to strengthen. Moving forward, we can further cultivate our content creators in our community to become our teachers, helping all content creators to achieve their financial goals. [Foreign language] So our users of our content, course offerings, they are come to Zhihu with the aim to improve themselves, and they also serve as the users for our vocational training business. Our vocational training is actually expanding beyond our community now. [Foreign language] The users will not only generate word of mouth effects, but also generate high quality commercial contents based on their learning experience, attracting new students. This greatly improved our acquired business, also improved the conversion rate and our to continue to maintain a dynamically optimal customer acquisition ROI in their respective segments. [Foreign language] Beyond that, our brand actually forms a closed loop eco-ecosystem that can empower our self-operated business in return. [Foreign language] We believe that the expenses and costs with our expenditure will be further diluted with the growth of our revenue from the vocational training business, and our commercialization efficiency will be further elevated. [Foreign language] We believe that also AI technology will highly enhance our efficiency and revolutionize our user experiences. [Foreign language] We will start from the core needs of our users and promote the application of AI large language model to empower the full process of our education different scenarios. [Foreign language] We believe that in the next one or two years, we aim to expand the application of AI large language model across the full process of our vocational training business. Thank you very much. The next question is from Lincoln Kong with Goldman Sachs. Please go ahead. Thanks, management, for taking my question, and I'm asking about advertising business on behalf of Wanton Con. Can mention more light on advertising business, including strategic priority and outlook for online marketing services for 2024. Thank you. [Foreign language] Thank you for your question. This is Wang Han, CFO of Zhihu. In the fourth quarter of 2023, in addition to the external and macro factors, the main reason for the delayed year-over-year recovery is that we have proactively enhanced the commercial content governance. In order to foster the trustworthiness within the Zhihu community, we chose to phase out some near-term, low-quality business income. [Foreign language] However, at the same time, we have made remarkable strides across our businesses. [Foreign language] To start with, the retention rate, average revenue per user, and content consumption volume of high-quality users across our core verticals have all been steadily increasing. [Foreign language] So secondly, the consumption power and high quality of Zhihu users have been further recognized in the industry. According to third-party surveys, 72% Zhihu users are willing to pay a higher price for quality products. [Foreign language] In addition, as much as 86% of Zhihu users have made repeat repurchases on JD.com during the past year, with a target group index, namely TGI, reaching an impressive 502, significantly outperforming the industry leverage. [Foreign language] In addition, we are optimizing our closed-loop data ecosystem. We have strengthened our data partnership with e-commerce platforms, such as Taobao and JD.com, through initiatives such as Xingzhi Plan and Jingzhi Plan. By providing visualized data, we assist brands and merchants to better validate the value and ROI of their promotional efforts to drive further increase in marketing services order placement. [Foreign language] In 2024, we expect to remain in a period of product upgrading and adjustments for our marketing services business. We will continue to explore business models that can foster stronger trustworthiness while optimizing our data infrastructure. Thank you very much. The next question is from Cici Cheng with CLSA. Please go ahead. [Foreign language] Thank you for taking my question. Can management share some color on user growth target for 2024? And how can we model the long-term sales and marketing cost ratio? Thanks. Oh, thank you for your question. [Foreign language] Thank you for your question. This is Wang Han, CFO of Zhihu. This year, we took a proactive approach to adjust our user growth strategy. Instead of simply pursuing a larger scale MAU, we will be focused on improving our core users' retention rate and further enhancing the trustworthiness within our community. Ultimately, we will establish a commercialization model that is unique to Zhihu. It is worth mentioning that although our sales and marketing expenses as a portion of revenue may seem significant, the direct user acquisition costs for our app were only half of the total promotional costs. Less than half. Less than half of the total promotional expenses. [Foreign language] The absolute amount of customer acquisition costs in the fourth quarter of 2023 increased by only 40% year-over-year, while our MAU only experienced a slight decline. That demonstrates the loyalty of Zhihu's core users. Zhihu has a group of users with the highest quality and greatest value. We believe that serving them well will yield substantial commercial rewards. We do not need to follow the other mass market social entertainment platforms to pursue user growth at any cost. We should follow our own path. As we approach an era of AI-generated content, authentic and trustworthy human-generated content will become increasingly scarce across the internet. Zhihu represents the place to generate and share genuine, high quality content, possessing a unique value proposition in the market. AI technology will enable us to blaze a trail that is different from traditional time-stamped framework, and explore new business models with greater potential. The way that Zhihu forms is actually the place that is demanded by the market in the age of AI technology. Thank you. Thank you. That concludes today's Q&A session. At this time, I will turn the conference back to Yolanda for any additional or closing remarks. Thank you, operator. Thanks all of you once again for joining us today. If you have any further questions, please contact our IR team directly or Piacente Financial Communications. Thank you.