Hello, everyone. I am the Founder and CEO of Tuya. May name is Wang Xueji, and thank you for joining us on our first earnings call as a public company. We're very pleased to report a 200% year-over-year growth in our total revenues, achieving [$60.9 million] for the first quarter of 2021. Revenues for our primary IoT PaaS business and our SaaS business both achieved over 220% year-over-year growth. We are very happy that we were able to accomplish all of these while continuing to improve our gross margin, which increased by 10.8 percentage points year-over-year to 41.1%. Such robust results were driven by three main factors: first, we capitalized on strong global demand for IoT products and services; second, we cultivated sustainable growth in demand from our partners by empowering them with our innovative and scalable cloud platform to become leading IoT companies in their respective industries; third, we attracted a large number of new customers from various industries and broadened the range of industry verticals by leveraging our reputable brand equity and the network effect of our Tuya ecosystem. First, I'll go into greater detail about the demand recovery. During the quarter, more than 39 million smart devices were deployed with our IoT PaaS services, showing a strong growth of demand for IoT products. During the quarter, the global economy rebounded as COVID vaccine coverage improved in major economic regions around the world. Over the last year, forced closures and quarantines have instilled new habits of using smart devices at home. This led to a rapid increase in the number of registered smart device developers on our platform from approximately 260,000 at the end of last year to more than 320,000 at the end of the first quarter. Furthermore, contactless services are becoming the new standards for many transactions in the post-COVID economy. For example, the demand for contactless check-in at hotels has grown rapidly. This shift in user habits is becoming increasingly prominent in the post-pandemic era and changing the way people work, study and attain themselves. According to CIC, the worldwide IoT PaaS total addressable market is forecasted to grow at a CAGR of 18.9% to $171.7 billion by 2024. In addition, based on IDC's forecast data, the worldwide IoT software's total addressable market is forecasted to grow at a CAGR of 12.9% to $237 billion by 2024. Next, I'll discuss the sustainable growth in demand we have cultivated from our existing customers by delivering the best value possible through our innovative, highly scalable cloud platform. We enable customers to grow into IoT leaders in their respective industries. As a result, their demand for our services grow as they expand the number of products that they develop on our platform. Our dollar-based manufacturing rate for IoT PaaS was 210% for the trailing 12 months ended March 31, 2021. We have now surpassed the industry average for the sixth consecutive quarter since we began tracking the metric. We were able to achieve this primarily because of the quality and scope of our [Indiscernible] IoT PaaS products, which delivered tremendous value to our customers on the cloud platform. Our customers can develop competitive and cost-effective products with very little R&D investment. We also enabled customers to expand into new product categories and geographic regions on our platform, which supports hundreds of thousands of product SKUs in over 200 countries and regions around the world. Our platform enables customers to upgrade their business models from a traditional sales-oriented business to a service-oriented IoT business. A large number of customers on the Tuya cloud platform have developed into IoT leaders in their respective industries. As of March 31, 2021, the number of premium customers who contributed over $100,000 in revenue during the trailing 12-month period grew to 216 from 188 as of December 31, 2020. During the first quarter of 2021, [89] of our brand customers placed more than 5x the number of orders from the same period last year. Next, I will give more color on how we leveraged our network effect of our Tuya ecosystem and brand reputation to acquire new customers from different industries. It is general consensus for IoT brands that end users need to have the ability to control multiple smart devices with one single application. Therefore, being able to connect with thousands of other brands on the Tuya cloud platform brings tremendous value to our customers. This network effect develops synergies between our partners and also creates significant barriers to entry from our competitors. The more brands we have on our platform, the more new brands want to join our platform. In the first quarter of this year, we acquired over 600 new IoT PaaS customers, increasing the number of IoT PaaS customers by nearly 160% year-over-year. Meanwhile, we have grown the number of brands on our platform to over 3,000 from 2,700 brands at the end of 2020. More and more brands from various industries are recognizing the value of our platform and are developing their products on our platform. Some of these customers include Danfoss, a Danish multinational air-conditioning and energy solutions provider; Möhlenhoff, a well-known German pioneer in heating and ventilation technology; Arçelik, one of the largest while goods producers in Europe with over 50% of market share in Turkey, and its sub-brand, Beko, being the second largest brand in Europe; Lock&Lock, a world renowned household kitchenware brand in South Korea; iHome, a health care and beauty electronics manufacturers with products in tens of millions of homes and millions of hotel rooms in North America; AO Smith, an American water heating and water treatment solutions provider with a multibillion-dollar market cap and 147 years of history; Jasco, an American home electronic company with 3,500 products sold in 85,000 stores across North and South America; Steck, a leading electronic brands in Brazil, offering over 50 types of electronics with industrial, commercial and residential use cases; Wipro, an Indian IT giant with $40 billion market cap; Realme, Oppo's [household] smart device brand; Wonly Group, the largest security door company in China; Sinopharm's [Indiscernible], a smart elderly care operator in China, which is a subsidiary of Sinopharm Group, China's largest pharmaceutical company and many more. Meanwhile, we are seeing more regional retail channel leaders, including telecom operators through Tuya's IoT PaaS services to empower their private brand smart devices. This includes companies such as Erajaya, the largest Indonesia retail chain store; Telkom, the largest telecommunication operator in Indonesia; Power, a well-known Nordic retail channel Pearl, the largest mail order company in Germany and many more. In fact, over the past few years, private labels from more than 40 leading retail companies in Europe were all powered by Tuya or as we like to say, PBT. Lidl, the largest food retail company in Europe is one such company. During the quarter, several top retail companies in North America have also chosen to be powered by Tuya for its private label smart products. Deployment of these products are expected in the fourth quarter of this year. In addition to acquiring new customers, we also expanded our services to include entirely new product categories. Leveraging the scalability of our platform, we grew the number of SKUs supported by our IoT PaaS segment to 310,000 by the end of the first quarter from 250,000 at the end of last year. During the first quarter, we expanded into many new PBT product lines. Many international brands and OEMs have entered into trial or mass production of products, such as personal transport devices, including gear cycles and scooters with annual shipments in the tens of millions. Digital appliances, including fast-charging devices and gaming light strips with annual shipments in the hundreds of millions. Smart wearables, including watch, bracelets and women's wear with annual shipments in the billions. Sports and health products, including jump ropes, dumbbells, badminton rackets, rowing machines and treadmills, et cetera, et cetera. Industrial and commercial gateways and, finally, lighting products such as high bay lights and landscape lights. In the first quarter, we also developed a series of low power security products, such as low power doorbells, cameras, locks and more. This is also a category with very strong and consistent demand. Above all, we are also developing IoT PaaS products for new energy, industrial and agricultural verticals. We'll share more details with everyone regarding these new verticals in the coming quarters. The three primary factors were main growth drivers for our IoT PaaS segment. Next, I will share some updates on our subsegment. We started to launch SaaS services at the end of 2019 and the several segments, including smart communities and real estate, smart hotels and apartments, smart consumer security and smart commercial lighting. Our SaaS business is still in the early stages of development, and we continue to make great strides to improve and launch more SaaS products. In this segment, our biggest competitive advantage is the fact that our Tuya's cloud platform has hundreds of thousands of global IoT developers. Our platform is neutral and open platform that can provide IoT SaaS customers with a varied collection of multi-branded hardware choices. During the first quarter, we were actively working on version 1.0 SaaS upgrade for our smart community and real estate services to integrate multiterminal interactive entrances. After just a little bit over a year, we have joined the upper echelon of China's smart community and real estate SaaS service providers. We have now served in many of China's leading real estate groups, including [Vanke Group], Sino-Ocean Group, China Overseas Land & Investment, Kaisa Group, [Indiscernible] Development, [Indiscernible] International Holdings and Sundy Service Group. Our partnerships with China Overseas Land & Investment and [Kaisa Prosper], both began in the first quarter of this year. We also released a premium version of our smart hotel and apartment SaaS solutions in the first quarter of this year. The premium version expands our services from simple hotel room management to encompass hotel lobby and facility traffic management. The new version also supports energy management, a key focal point for most hotel managers. Tuya's smart hotel and apartment SaaS solution already powers 25,000 rooms in China. Now with the pandemic situation improving around the world, we have begun to enter overseas markets. We also announced version 2.0 for our smart consumer security SaaS in the first quarter, upgrading the back-end into smart security service platform. Customers can manage multiple households or commercial devices through a unified portal by creating a closed loop data connection between home devices and commercially managed security services. We're able to realize a standardized business interface with third-party security operators globally. Our smart consumer security SaaS has already received orders from a number of security operators in China and overseas, including [Indiscernible] Safety, the largest store security operator in China. Smart commercial lighting SaaS was launched in the second quarter of last year. In the first quarter of 2021, we launched version 1.0 of our smart commercial lighting SaaS, which has functions in smart construction, remote monitoring, energy consumption monitoring, operations and maintenance and more. Smart commercial lighting SaaS will promote the enhancement of commercializing business models, creating an unforgettable customer experience and substantial energy savings. For example, [Xtep Group], a three story flagship store in Shenzhen, is our commercial lighting SaaS to create a uniquely artistic shopping experience. Some gas stations have saved more than 40% in energy usage with our smart commercial lighting SaaS. Dozens of China's leading lighting companies, including NVC Lighting, Skyworth Lighting and [Strong LED], all customers of Tuya smart commercial lighting SaaS. This segment also has many customers such as system operators in Europe, Hong Kong and more. SaaS business is also showing early signs of high repurchase rates. Following its launch in late 2019, our hotel SaaS business welcomed its first group of contract renewals with a renewal rate of over 90%. The [Vanke Group], our first real estate SaaS customer and one of the largest real estate groups in China, signed a second phase SaaS contract with us at the beginning of this year. Sundy Service Group, our first smart communities customer and a top 100 real estate group in China, has signed a third phase SaaS service contract with us in February this year. This contract follows their first phase contract in August 2020 and second phase contract in October 2020. Going forward, we'll continue to polish our SaaS products and advance our gradual entry of various SaaS services into global markets Last but not least, let me talk about the development of Tuya's cloud platform system. The Tuya cloud platform is at the core of our pursuit to provide the ultimate user experience. In the first quarter, we continued to invest R&D resources in the construction of infrastructure for our cloud platform to ensure that we can maintain efficient product iteration in the IoT industry. Meanwhile, we have proposed a number of innovative industry solutions to provide basic capabilities for customers to quickly enter the market. For example, in the first quarter of 2021, we launched energy-saving power products. By analyzing and predicting the energy consumption data of users' smart devices, we are able to provide customers with energy consumption monitoring, alert, energy management, operation and maintenance. We empower our customers across consumer, commercial and industrial sectors by enabling them to quickly build a complete set of energy application product systems. Moreover, we provide a health care service cloud product system for smart device manufacturers in the healthcare industry. In terms of cloud security, we have obtained 4 certifications, including the Cloud Security Alliance Star Certification, issued by the British Standards Institution, an organization instrumental to the formation of the ISO and IEC. Tuya is the world's first IoT cloud platform to hold these 4 certifications at the same time. We also successfully completed the Service Organization Controls 2 Type II certification performed by [EMR] in the third quarter. Our R&D capabilities and data security have always been central to our growth strategies. As of March 31, 2021, our number of employees have increased to almost 2,900 from 2,258 at the end of 2020, 70% of which are R&D headcount. This allows us to lay the foundation for our sustainable development going forward. That concludes my prepared remarks for the first quarter. Now I'll turn the call over to Jessie, our CFO, to review the financial details.