Thanks, Christian. Good morning and good evening everyone. Welcome to Aurora Mobile's 2023 first quarter earnings call. Before I comment on our Q1 results, I would like to remind everyone that the quarterly earnings deck is available on our website. You may refer to the deck as we proceed with the call today. Despite a challenging macro environment, we successfully concluded the first quarter of 2023 with business and social activities slowly recovering during 2023 following a shift in COVID policy towards the end of 2022, some of our businesses were impacted to varying degrees. However, we are pleased to report that, so far in Q2, we have witnessed good momentum in revenue growth, especially from Developer Services. Although, the external macro environment was murky during the first quarter, we have not stopping making our organization more efficient. We carried on with our strict cost management strategy and cautious hirings, flattened our management structure, and as a result, our overall expenditures have continued to drop year-over-year and quarter-over-quarter. We believe these efforts will have us improve our financial performance in the long-run, which will also give us the space in a difficult environment to execute on our ambition. Here are some key financial results that I am proud to share. Lowest net loss since 2019 Q3 at RMB15.2 million, lowest adjusted operating expenses since IPO at RMB57.4 million, lowest operating expenses since IPO at RMB64.8 million, gross margin back to 70%, AR turnover days at 39 days, deferred revenue balance has been higher than RMB100 million for over 12 consecutive quarters. Total customer number remained stable at 4,527, up 1% year-over-year. Our effective cost optimization continue to earn noticeable financial results with the lowest net loss since 2019 Q3 at RMB15.2 million and adjusted operating expenses at historically low since IPO of RMB57.4 million. We also maintained a very healthy gross margin of 70%. Now, let me go through our different revenue streams. Developer Services revenues decreased by 24% year-over-year, mainly due to the weakness in value-added services, offset by the growth in Subscription Services. Subscription Services revenue were RMB37.5 million, up 9% year-over-year mainly fueled by increasing ARPU. Subscription Services as our core business include JPush, Analytics, UMS and other products, and despite the external uncertain macro environment, we signed up many well-known clients, including, but not limited to, [indiscernible]. Going into Q2, we expect some major recovery in Subscription Services, and we hope we will see double-digit growth on a Q-o-Q basis. Value-added services revenue were RMB8.0 million, decreased by 69% year-over-year, which was a result of weak advertising demand. We believe advertising-related revenue will continue to be impacted by the uncertain and volatile macroeconomic environment. Moving on to our products and services. We have seen strong growth potential and interest in the EngageLab platform that we launched during Q4 last year. We have implemented various improvements to all the products under EngageLab. Recently, EngageLab has established a reliable network of data centers in multiple regions around the world to ensure that customers can choose the storage location that best suit their business needs. These data centers meet the highest security standards and have passed a rigorous certification and audit process. With the rapid growth in global data exchange, overseas customers have increasing data security and compliance requirements. In addition to Singapore, EngageLab has now added more data center options for overseas customers to deploy the push notification products, AppPush and WebPush. These include China-Hong Kong, Germany-Frankfurt, U.S.-California, Japan-Tokyo, South Korea-Seoul, UAE-Dubai, Brazil-Sao Paulo, and Australia-Sydney. Customers can select one appropriate data center to store data for an application based on comprehensive considerations, such as the location of their end user and regulations. We will continue to invest in technology innovation and global infrastructure building and are committed to providing our customers with the highest level of data security and compliance assurance. We are thrilled to report that EngageLab has attracted numerous valuable overseas customers and generated significant revenue and ARPU in just a few months. Encouragingly, new contributions from overseas customers continue to outpace those from domestic customers and we anticipate that our overseas business will be one of our biggest growth drivers going forward. Our products have been well-received by customers in multiple countries and regions, including the U.S., Malaysia, Thailand, and Singapore. Notably, well-known companies such as BYD, [indiscernible] has become our valued customers. With this recognition from our customers, we remain committed to enhancing our products and services to enable global developers to achieve high-efficiency and cost-effective user reach. In addition to other achievement this quarter, we have launched our latest enhancement to JPush, the in-app messaging function. Unlike notifications [indiscernible] in-app message appear within the apps, using pop-up windows and floating box to capture users' attention. This feature emphasis on user interaction and engagement, ensuring developers can be creative and retain their most valuable users. By push notification for user back to the app, in-app message guide the user to interact with the app in a way that met their expectation. With our app developer-centric strategy and through our ongoing improvements and iterations of products and technologies, we will continue to improve the app and help mobile app developers answer their optional and growth demands and provide better user experience. With that, I will now pass the call to Shan-Nen, who will share more information about the Vertical Applications and other aspects of our performance.