Thank you, Sheryl. Hello everyone. In the first quarter of 2021 with our progress guidance, Cheetah Mobile's revenue was about RMB200 million. The company has efficiently improved operational efficiency, gross margin continuously increased to 70.1%. Operating loss narrowed to RMB57 million, and the net income attributed to our shareholder was RMB76 million. Our cash position has been increasing to about US$276 million as of March 31, 2021. The abundant cash resource enabled us to keep investing in our core business to empower the company's long-term sustainable growth. For our internet business in this quarter, the company has been focused on the domestic markets, enhancing memberships service. Our business has gradually transformed from a single advertisement -- advertising model to a diverse supply model of advertising plus subscription. Our product and service all centered on how to deliver superior to user experience and improve our user satisfaction. As a result, we see a continued increase in revenue from our membership service in terms of both absolute numbers and the percentage of total internet revenues. Besides, the company has been confidently develop -- developing new utility products on mobile platform to increase the user time and attract more high value young users. Despite the huge challenge from the markets, our efforts to optimize our business model and the products, our internet business manages to realize net profit for five consecutive quarter. For our AI business, we have seen some initial achievements in the business model of shopping mall robots. By now, we have more than 12,000 robots in about 1,200 shopping malls in more than 40 cities, pilot in several shopping malls showed that the selling coupon by our robots could efficient -- effectively attract new customer to merchants. They are very active to participate, because it is a win-win situation for both customer and merchants. We have also launched mini [ph] app based on this shopping mall robot, coupon selling model. In May, we started to expand this business and housing our rapid growth. We believe that we have found the key points to monetize this business and expect a boost in the coming quarter. Lastly, I would like to emphasize that in spite of extension headwinds last year, we’ve consistently realized that net profit -- sorry, net profit and increase our cash reserves. This cannot be achieved without our determination and improved operational efficiency. In the coming quarters, we will keep the profitable growth of our domestic internet business. At the same time, our top priority will still be the modernization of our shopping mall robot business, which will create new growth engine for the company. With that, I will now turn the call to our CFO, Thomas Ren, to go through the details of our first quarter financial results.