Okay. Thank you, Jingjing. I'm pleased to deliver today's opening remarks on behalf of Mr. Zhou Yuan, Founder and CEO of Zhihu. Thank you for joining Zhihu's second quarter 2022 earnings call. The recent COVID-19 pandemic situation and macroeconomic condition created challenging environment in the second quarter. Against this backdrop, we focused on retaining high-quality user growth in a sustainable and efficient manner. Confronting this uncertainties, we firmly executed our Community Ecosystem Comes First strategy and improved business efficiency with optimized organizational structure. In addition, we continue to expand our fulfilling content offerings, we have creators' experience and strengthen community culture. Together this efficiently draw quality growth in our user base, improve engagement and stickiness and better our bottom line performance. In Q2, our average MAU grew by 12.3% year-over-year to RMB105.9 million. And from January to June this year, the average time spent per our DAU increased more than 12%. We are delighted to see our content creator becoming more active and creative, contributing more high-quality fulfilling content to our library. In the quarter, the average DAU of our high ranking content creators increased by nearly 50% compared to the same period last year, with average creation volume per creator almost doubling. Its all of the efforts we’ve made to enhance our community ecosystem, we are delighted to see fruitful rewards not only in our community ecosystem centered around our user creators and content library, but also in our business results. In Q2, despite many uncertainties, our total revenue reached RMB836 million, growing 31% year-over-year, and 12.5% quarter-over-quarter. While our net loss narrowed by 24.4% from the first quarter of the year, as a percentage of the total revenue. Zhihu's diversified revenue structure was a critical force in achieving remarkable top line growth, and made adverse macro conditions. Paid membership in the quarter grow significantly by 75.1% year-over-year, and contributed 32.4% of total revenue. This phenomenal growth clearly demonstrates the strength of content-centric business model and the revenue of our fulfilling content with users. We also saw strong growth in Content-Commerce Solutions, or CCS, which grow 15.9% year-over-year, attaining strong growth momentum relative to the wider industry. And our vocational training services are rapidly emerging as a new growth driver, contributing 5.5% of our total revenue in the quarter with a six-fold year-over-year growth. Last year, we said 2022 as a transition year, focusing on the execution of our Community Ecosystem Comes First' strategy. We're now more than halfway through 2022. Given all the macro level and effective developments in the first half of the year, we have never been more sure that by investing in high-quality growth, and focusing on achieving profitability in the near-term will make our community and business more sustainable for the long run. Now, I'd like to go through our business in detail, covering content, users and monetization. Content. Fulfilling content that broadens horizons provides solutions and resonates with users is the foundation that drives sustainable community growth. At the end of Q2, the cumulative pieces of content in our community reached RMB551 million, including RMB462 million questions and answers, representing a year-over-year increase of 31% and 26%, respectively. In Q2, we continue to implement the scenario-oriented approach for fulfilling content creation in various verticals. This approach has worked especially well in scenarios surrounding career development and family [ph] needs. For example, during the time of once yearly national college entrance examination, the Gaokao, search traffic surges with parents and students actively [indiscernible] knowledge experience and insights to help with important decisions around this lightning inflection point. To meet this need, we broaden and deepen related content coverage by enlisting experienced users who previously set for the exam with questions and thoughts, Gaokao information on our platform to become Gaokao answers and provide help to others in our community according to the summary report on college selection and application 2022, we released in July. The total number of questions on college selection application related topics increased to approximately 7.7 million And the total page views for Gaokao-related content grew a remarkable 57% year-over-year to exceed 2.5 billion. After the exam period, we released more relaxing content in tune with the summer vacation and launched a well received service of online summer events in categories, including sentiments, movies and television, fashion, ACG. It isn't worth mentioning that the [indiscernible] on Gaokao topics in Chinese Gaokao [indiscernible] and high-quality visualized content reproduced during the summer break was not only well received by the young generation, but also resonated among our mature users. In June, we launched an online learning portal on our website to further promote our vocational training related content portfolio. The learning portal offers hundreds of our online educational resources in both video and a text and picture format. The robust content library contains both career skill development, and personal enrichment learning resources. Some examples include Content [ph] Training, an English exam prep, as well as photography and pop music educational content. The learning portal has been well received and significantly throughout engagement with our target users for the vocational training service business. Vocational training content is evolving into an important part of our closed loop monetization ecosystem. The second part is about users. In [indiscernible] oriented content cultivation in various verticals, and an enhanced recommendation algorithm effectively boosted the demand for more quality content consumption. During the quarter, we saw encouraging performance across a range of user growth metrics, including our user base, user consumption experience, user engagement and stickiness. The average MAU for Q2 increased by 12.3% year-over-year to 105.9 million. Average monthly viewers [ph] for the quarter exceeded 647 million, rising by 26.6% year-over-year. We continue to see our user base remain young and gender balanced with a robust user growth trained from the second [indiscernible]. We're also seeing inspiring growth across other closely watched key metrics used to inherently evaluate the well-being of our community. These include users activeness, time spent, retention and engagement. Moving to the content creator side, enhancing creators creating experience and financially reward is one of the pillars to our strategy. Our high-end plan for creator support scheme is a critical part of this effort. Within one quarter the plan is released. We received overwhelmingly positive feedback from creators with survey results showing more than half of the high ranking creators have experienced strong traffic support. On the financial side, we are gratified to see that both the number of creators who earn the financial income and average income per creator in Q2 retain a strong growth momentum on a year-over-year basis. At the start of Q1, we set a target to help more than 100 creator, or more than RMB1 million in the year via our paid membership program. We're proud to announce that we have progressed much faster than expected. The next part is about community culture. During the quarter, we further reinforced our community compliance through improved product features and technical infrastructure, such as upgraded privacy protection features for users, and a copyright protection feature for our content creators. We also increase thresholds to enhance use protection in verticals such as eSports, our community culture and a strong brand further strengthen our content ecosystem. And we are firmly demonstrating our conviction to uphold our social responsibilities to maintain a healthy community culture and to promote rational optimism at the social platform and the content community. As we look at the second half of the year, we will continue to iterate our multimedia infrastructure and optimize product offerings. We believe we can further unlock our value in more commercial opportunities by better addressing our user content consumption needs. In particular, we see our diversified accountant format providing greater potential to address users need in multi scenarios, including thoughts and live streaming, which are both gaining in popularity among users. We believe that the diverse and enhanced monetization capabilities will position us stronger and more resilient for long-term development. Now moving to financials. Our CFO, Wei, will go through our financial results in detail later in this call. But I like to first highlight a few points how our accountant centric-monetization has proven itself resilient and strong in the second quarter. As many industries were heavily impacted by the ongoing COVID-19 outbreaks and softer macro environment, advertisers and business partners became more cautious in online marketing spending and placed greater reach on integrated marketing solutions that deliver more comprehensive influence on targeted consumers. Our community based ecosystem is an ideal vehicle to accomplish this goal. Through our content-commerce solutions and advertising, we successfully increased our recognition from brands and merchants and attracted their market spending despite the challenging market conditions. The top five industries in revenue contribution in Q2 came from e-commerce, IT and 3C, cosmetics and skin care, internet services and automotive. There are two drivers raising the ceiling of CCS. In Q2, we continue to motivate our creators by publishing the Zhihu Influence and a growth list. The newly listed Commercial Content Creators in the second quarter came from various industries, including IT and 3C, fashion, automotive, maternal care among others. At the same time, Cheese Platform maintain its role to effectively connect content creators with brands and merchants. The number of creators who have joined the platform and earn income through CCS continue to grow, both on year-over-year and a quarter-over-quarter basis. We also further improved our Commercial Content Distribution efficiency, and further upgraded the assessment system for commercial content by implementing fulfilling content standards. Let's talk about advertising. Despite the fact that [indiscernible] advertising budgets were negatively affected in Q2. Our IT-based marketing campaign provided a unique value to advertisers. By leveraging our massive user base, and trustworthy community culture, our multiple IT-based marketing campaigns have greater influence on users mindset through creative and fulfilling content. During Q2, our Curiosity Lab in Chinese [indiscernible], this series partnered with one of our clients, a smart kitchen appliance manufacturer to design plans, and execute a fun and imaginative campaign centered around playful, quirky questions. Hi to their products and business, that can deal with a huge success. One of the questions that’s generated huge engagement where if your kitchen smoke proceed, what [indiscernible]. The relevant content under this question, attracted nearly 5 million views. And the accompanying experimental video we made has been viewed over a million times. Paid membership retain a strong momentum during the quarter. Among Zhihu's premium paid content library, our [indiscernible] column are particularly popular owing to the high-quality of original work from our community creators. One such creator, the ER doctor [indiscernible] known integral community as a doctor house. We were attracted by his talents while big data and [indiscernible] seem to start his own column in the community. Stories from the emergency room. In the [indiscernible] he has become one of our top columnist, attracting tens of millions of clicks, and there are many others like him. The value of this mechanism is more than allowing us to scout for talented creators, it also provides a steady stream of creative inspiration for our creators. In the second quarter, the financial income earned by our premium content creators increased by almost 80% compared to the same period last year. This community based mechanism not only differentiates us from other premium content providers, but also offers strong potential to drive the vitality of our monetization ecosystem. At the end of Q2, our average monthly paid members reached 8.46 million and in July, the number exceeded 10 million. This growth demonstrates the remarkable success of our content-centric business model. It is encouraging to see a more diversified paying members and a growing number of male users captivated by the more -- by more content relating to history, fiction and true stories in our premium library. Male users have now grown to about 25% of our total paid members. On a rapidly developing vocational training business maintained robust growth momentum during Q2, contributing 5.5% to the total revenue. In the second quarter, we further enhanced the sales and a CRM system for the business by strengthening our technical capabilities. Innovation, we continue to expand the number of course offerings, including newly launched courses in engineering and the design. Our growing library of diversified vocational courses helps further expand our user base, as witnessed by the number of paying users in the business tripling over last year. We view this business as an emerging growth driver with huge potential in a belief that it will make further positive contributions to our community ecosystem. Marching forward, by leveraging ourselves reinforced content ecosystem combined with the enhanced commercialization capability, we will be able to drive the sustainable prosperity of our community ecosystem. At the same time, we will continue to implement prudent cost controls to achieve a rational balance between user growth and the profitability in the long run. This concludes Mr. Zhou Yuan's remarks. I will now turn to our financials. We are delighted to report another strong quarter, despite the resurgence of COVID-19 and the subsequent business disruptions in major cities across China. Our content-centric business model continue to show its resilience as well as exciting growth potential through the impressive execution of our Community Ecosystem Comes First strategy. Our revenue for Q2 reached RMB836 million, representing a year-over-year increase of 31%. Zhihu's overall top line growth reflects the strength of our diversified revenue drivers. The CCS and our advertising business combined contributed 57.2% of total revenue in the quarter. Our paid memberships and the vocational training business together represented 38% of our total revenues, further demonstrating the value of diversified drivers within our monetization ecosystem. CCS revenue alone achieved a year-over-year growth of 15.9% and accounted for 28.8% of total revenue. In late Q2, our CCS reacted quickly and captured the demand uptrend in the market as the macro economy is starting to show an upward trend. In June, the effectiveness of CCS services was validated, recording increases in both the number of end customers and the average spending per CCS customers. We have seen a negative impact on the advertising market since April due to the COVID-19 resurgence with some of our brand marketing customers delayed or cancelled their marketing campaigns originally scheduled for Q2. As a result, our advertising revenue accounted for 28.4% of total revenue in the quarter, down 4% compared to the same period last year. Our paid membership services recorded a 75.1% year-over-year growth rate in revenue reaching RMB271.2 million in Q2. The average number of monthly paying members in the quarter hit another record high of RMB8.46 million, with a penetration rate of 8% of average MAU. Our flattening vocational training continued its revenue growth momentum in Q2 and increased 6x year-over-year in revenue. During the second quarter, our gross profit was RMB400 million, with an improved gross profit margin to 48% compared to the previous quarter. The quarter-over-quarter improvement in GP margins was due to our diligent ongoing cost control discipline and efficiency improvements across the wider industry, our gross profit margins continue to remain at high-end. Throughout the quarter, we continue to look for ways to better optimize our operating expenses structure and improve operational efficiency. Our total operating expenses for Q2 were RMB860.3 million with improved operating margins on a sequential basis. As a percentage of total revenue, total marketing expenses decreased over 5% compared to the same period of last year. Thanks to our optimized expense structure with targeted spending on our promotion and advertising to adapt to the changing market conditions. At the same time, we selectively invested in our R&D capabilities and improved R&D staff incentive through a better organized employee benefit plan. Accordingly, our R&D expenses as a percentage of revenue increased 7.8% year-over-year, while G&A expenses decreased 13% as a percentage of our revenue. Our net loss was RMB487 million in Q2, and then narrowed by 24.4% as a percentage of the total revenue from the first quarter of this year. And our adjusted net loss, which primarily excludes share-based compensation expenses was RMB443.8 million in Q2. As of June 30, 2022, the company had cash and cash equivalents, term deposits, restricted cash and short-term investments of RMB7 billion. In late May, we are now financed up to US$100 million share repurchase program. And as of June 30, 2022, we have repurchased approximately 0.3 million Class A ordinary shares at a total cost of US$1.1 million. This concludes my prepared remarks on our financial performance for this quarter. Let's turn the call over to the operator for the Q&A session. Thank you.