Thank you, Xiaoping. This is Shun Jiang, CFO. I will quickly translate Mr. Chen's remarks before providing an operational update and discuss our financial performance for the fourth quarter of 2019 and our outlook. Hello, everyone. Thank you for joining our fourth quarter and full year 2019 earnings conference call. 2019 was another extraordinary year for Viomi. Our business has gone from strength to strength, with robust growth across all product segments, successful innovation, new product development, increasing brand recognition, larger market share and deeper channel penetration. Business momentum continued to be strong with fourth quarter and full year 2019 revenues increases by 82.2% and 81.5% year-over-year, respectively exceeding the high end of previous guidance. Non-GAAP net income in the fourth quarter and full year 2019 increased by 54.6% and 85.2% year-over-year respectively. We recorded our best ever Double 11 sales performance in 2019 with our online channels more than doubling respective GMB in the fourth quarter on a year-over-year basis. Performance was strong across our core online channels including Yopine, JD, Tmall and Suning as well as our own e-commerce platform, Yunmi Shangcheng. Our Xiaomi branded products business also performed extremely well with water purifiers seen strong volume growth and new products such as sweeper robots, range hoods and stoves and blenders, all contributing meaningfully to the year-over-year growth. The Viomi IoT @ home, Yunmi, brand has come a long way since inception only a few short years ago. From our recent successes we have well and truly established ourselves as a credible name and a leader in the IoT industry in China and are continue to reap the benefits about increased brand visibility scale and channel penetration. We are also making efforts towards streamlining and optimizing SKUs within each of our existing product categories while further deepening and broadening our sales channels across both online and offline networks. Investment in research and development and innovation has always been fundamental to our success. As a testament to our leading R&D capabilities, Viomi was named as one of the kings of IoT in 36KR's list for cutting-edge technology and high growth enterprises in November. In addition, we were listed as one of the national intellectual property demonstration enterprises in 2019. As of the end of 2019, we had registered over 1,300 patents domestically with many of our products obtaining Chinese high-tech product certifications. As part of our 5G plus IOT strategy, we continue to introduce to the market many new innovative and cutting-edge product lines as well as new product categories throughout 2019 and into 2020. Including products under our premium cooking brand that were launched in late 2019. In terms of 5G capabilities, we rolled out our state-of-the-art hybrid networking 5G CPE product in October, equipped with Qualcomm SDXX5G microchip between one touch connectivity and the ability to connect over 256 IoT products providing groundbreaking seamless, full home wireless coverage technology to consumers. We have also been dedicated to developing next-generation Wi-Fi 6 enabled products and technologies integrating Wi-Fi, Bluetooth, ZigBee and other protocols to deliver truly holistic connectivity and user experiences across IoT products in the home environment. We're excited and look forward to sharing these products with the market in the coming months as they are introduced. In February, we announced the company had entered into a memorandum of understanding with the local government in Shunde province for the development of Viomi IoT Technology Park, a comprehensive high-tech industrial campus expected to be completed in two phases over and up to 10 year period. The first phase we expected to include the company's multifunctional headquarters, including a product experience Center R&D centers, smart manufacturing centers and centralized hub for sales and customer service functions. The second is expected to focus on and accommodate additional facilities for the company's IoT products serving as a focal point for Viomi's extended supply chain capabilities, while attracting more upstream and downstream corporate and business opportunities. This initiative demonstrates our commitment to strengthening our IoT supply chain resources and provides the necessary foundation to support the manufacturing and R&D capabilities we will need in order to thrive in the upcoming 5G and IoT era. This technology Park will equip us with the necessary resources to capture the increasing number of opportunities before us going forward. As you can see our company had significant positive momentum heading into 2020. However, the COVID-19 outbreak has created unique global and industry-wide challenges, impacting supply chains, logistics, sales channels, as well as overall consumer sentiment and purchasing behavior. Based on the overall industry data domestic retail sales of many home appliances products have seen significant double digit declines in the first two months of the year with offline channels being particularly hard hit. Having said that we, together with our suppliers and customers have gradually resumed normal operations since mid-February and have seen noticeable improvements going into March both from a supply and demand perspective. It is also worth noting that we currently have minimal exposure to international and export markets and have minimal exposure to international suppliers. Accordingly, we do not see any meaningful direct impacts from the current Covid situation outside of China. Nevertheless, we believe our industry as well as the broader economy are still facing significant uncertainties of the near to medium term that will be difficult to quantify. Although the situation may currently be improving in China, the recent escalation globally is likely to continue to depress overall consumer confidence and spending patterns in the domestic market in the months to come. We're therefore utilizing this time to further enhance our operational efficiency and implement stringent cost control measures across all areas of our business. In addition to our product development and sales and marketing efforts. At the start of the year, we announced our Viomi 2030 3511 strategic objective with our mission to become a leading large-scale technology enterprise. We are shaping our corporate culture and mapping out our plans to achieve strong and sustainable growth over at least the next 10 years. We are fully confident that our strong business fundamentals were both financial resources and strategic direction will enable us to power through this unprecedented period and achieve our long-term goals. Finally, in light of prevailing market conditions we announced today that our Board of Directors had approved their share repurchase program where the company is authorized to repurchase up to US $10 million worth of its Class A ordinary shares in the form of American Depositary Shares over the next 12 month period. The share repurchase program which reflects our confidence in our business outlook and demonstrates our commitment to maximizing long-term shareholder value. Our healthy balance sheet and strong cash flow generating ability provides us with ample flexibility to effectively implement the share repurchase program while continuing to execute our growth strategies. So that concludes our Founder's comments.