incident. On January 20, 2020, Chengmai Technology announced its performance forecast: Net profit for 2019 was 164 million yuan to 169 million yuan, an increase of 930%-960% over the previous year. The sale of Wuhan Chengmai obtained a large investment income. In 2019, the company completed the sale of 100% of the shares of Wuhan Chengmai, a wholly-owned subsidiary, and received a one-time investment income of 157 million yuan. Drive a significant increase in the company's net profit in 2019. Net profit declined year-on-year after deduction of investment income. After deducting investment income of 157 million yuan, the company's net profit was 6.54 million yuan to 11.31 million yuan, a year-on-year decrease of 58.9%-29.0%. The main reasons for the year-on-year decline were: 1) impairment of goodwill for subsidiaries; 2) year-on-year increases in R&D investment and labor costs; and 3) the implementation of equity incentives in 2019 generated share payment expenses. The adaptation work is progressing smoothly, and a complete ecosystem is gradually being established. Tongxin Software will focus on establishing an ecological alliance around a common software and hardware adaptation center for operating systems, and making every effort to build a software and hardware innovation ecosystem based on the unified operating system UOS. As the creator of the domestic operating system ecosystem, Deepin Technology has not only formed close cooperative relationships with various manufacturers of chips, machines, middleware, databases, etc., but has also jointly developed a variety of application software that meets the needs of Chinese users with 360, Jinshan, NetEase, and Sogou. Deepin Technology's operating system products have passed the Ministry of Public Security's secure operating system certification, the Ministry of Industry and Information Technology's domestic operating system adaptation certification, and have been shortlisted in the central procurement list of the State Administration Bureau, and have been widely used by domestic party, government, military, financial, operator, and education customers. According to the official website of Tongxin Software, the adaptation of the unified operating system is currently progressing smoothly, and the hardware, software, and peripherals are all compatible with a large number of high-quality products and enterprises. Maintain a “buy” rating. As one of the leaders in the domestic operating system field, the UOS unified operating system is expected to benefit from the development of the industry and continue to maintain its “buy” rating. Risk warning: Tongxin software development falls short of expectations, customer development falls short of expectations, and competition in the operating system market intensifies.