 Hello everyone, I'm so glad to share my thinking of the practice of Tencent Open Source in the past 10 years and its future plans. I hope you can feel Tencent's passion and efforts here. Okay, let me share the screen. Okay, so my topic is the Ten Years of Practice from Tencent Open Source. And since 2010, Tencent has put forward the trajectory of embracing openness. It has been 10 years. In these years, Tencent Open Source step by step will use internal code to reduce the duplication and remain the combination of inner source and open source. And also form our new code culture and open source strategy and process. After Tencent established the Tencent Open Source Alliance that is TOSA we can see in the slide. In 2015, Tencent Open Source entered a fast-paced effort with 20 open source projects in one year. And with the establishment of Tencent Technical Committed and Tencent Open Source Office, we strengthened cooperation with the industry's top open source foundations and gradually formed an open source way combining with bottom-up and up-down. Since 2018, in just three years ago, Tencent has donated six open source projects into Linus Foundation, Touchsoftware Foundation, and OpenATOM Foundation. They are TAS, TCR, Angel, QNQ, and OS Tiny and TKStats. The Microsoft open source project TAS is the first open source foundation established in Linus Foundation from China. And Angel, an open source project on artificial intelligence platform, has also become China's first open source project, graduating from LFAI Foundation. Ten years ago, from the beginning of Tencent Open Source, now Tencent has fully embraced open source. Open Source is a global movement and Tencent is participating in the global open source movement. At present, Tencent has joined more than 10 international top open source foundations such as Linus Foundation, Touchsoftware Foundation, and CNSAT, and the Hyperager Foundation, and LAI and F-Edge, like also the TAS Foundation in Linus Foundation. Tencent is also a founding member of Linus AI Foundation and Linus Foundation Public Health LFPH, an open ATOM Foundation in China. Under the academic situation, Tencent participates in the new public health plan, or FPH, in the Linus Foundation for the first time. It is also the only founding member in China to set an example for cooperation in coming back to the academic. Tencent also led the establishment of the TAS Foundation that is focusing on the field of microservices. Tencent actively embraced open source and cooperated with the world by actively participating in and leading the establishment of the International Open Source Foundation. All of our developers share the beauty of technology. On GitHub, Tencent has tapped the attention and get more than 3,030,000 stars. At present, Tencent has ranked in the top global open source enterprise contributions and has released more than 130 high-quality open source projects, covering five fields, such as native, big data, AI, mobile development, and web development. These open source projects are developed by run Tencent's core business. Thousands of developers have deeply participated in the construction of these open source projects around the world. Tencent has also deeply participated in the construction of dozens of international projects. Tencent's developers are members of Project Management Committee PMC, maintainer, computer and computer in the community and other roles participating in the open source projects. Among them, Tencent has a major contributor. At the release of several international open source projects, Tencent ranked first in China around the contributions of several open source communities such as OpenJTK and KVM. We have made an overall of Tencent's exploration of open source in the past 10 years and also released the 10-year landscape of Tencent open source, and this report shows that over the past 10 years, Tencent open source is actively participating in the construction of the global science and technology community through internal and external open source code and continuously sharing its own technical capabilities and technical achievements to the world with practical actions. So why Tencent showed action to embrace open source compared with the core development? Tencent chose this grant by the jointly built by all humans. User-oriented technology-oriented is Tencent's mission, vision and also the foundation of Tencent's open source. Created for world collaboration and action is Tencent's values and Tencent's open source or new core culture, open core technology cooperation, and grows on the cloud as the technology proposed by Tencent since the reform of the year in 2019 has guided the direction of Tencent's open source. The continuously interaction of Tencent's vision, values and technologies actually over the past decade have formed the result of the combination of Tencent's open source concept and practice that is Tencent open source way. Open collaboration, open source for good does our mission and mission, and Tencent open source way is continuously influenced by Tencent's values, mission, vision and technologies, and finally developed through the combination of top-down and bottom-up open source promotion. Among them, the concept of open collaboration is formed the collaboration and the creation in Tencent's values. About inner-source in Tencent, through the old team project, we create old team that is the developers can self-drive into open source collaboration. About the open source, we contribute to a lot of open source projects outside in order to get the feedback to the construction of internal technical system. Finally, through the combination of inner-source and open source, we could build an international open source community, business and ecosystem. Our mission and vision are the role-case, science and technology for the good, and Tencent open source also has its own mission for the good, and the source code is the common values of humans, which gathers human wisdom through the open source code. We also participate in and led the public health brand in the foundation, as I just mentioned. What's more, open source reveals the IND cost and accelerate the social progress through the open source innovation. Open collaboration, open source for good, formed Tencent open source culture and helped Tencent to have greater influence in the international open source field in the future. After 10 years of practice and inspiration, Tencent has formed an open source strategy model of open source collaboration as the foundation, product community business may faster progress and accelerate the dual view of inner-source and open source. First, inner-source, that is the internal view through internal code open and open source collaboration, reduce liquidity investment, improve IND efficiency and reduce operating costs. Through inner-source, we incubate the excellent projects after graduation and bring them to the open source community. Second, open source, that's the external real products, communities and commerce for most technical development and scientific and technical innovation improves IND quality, reduce cost and increase efficiency. Through open source real, excellent open source projects are important inside companies and also the fresh product from external is used to promote the continuous innovation for the products inside. Through the combination of inner-source and open source, we open up the dual wheels so as to make them closely like two wheels so as to provide the society with an endless open source power. In the future, Tencent will continue to open cooperation and give more source power of the open source community. We have been deeply involved in more than 10 technical fields such as coordinated artificial intelligence, blockchain, 5G, LG and Action. By establishing an open source leader community and open source lab and holding excellent programs, more developers will step on the open source stage. Tencent will continue to develop its open source, help new construction and digital transformation with open source power. Tencent has inviting leaders and mentors in many fields such as coordinated artificial intelligence with data blockchain, edge computing, development, language and technical architecture, open source governments and extra. We hope that more developers and more open source fans becoming open source leaders and our mentors also help to develop the open source community in the future. Okay, that's all I share today. Thank you for having me here and thank you. Thank you all. Goodbye.