On this day, 43 years ago, on January 11, 1982 (December 17, 1981, the lunar calendar), Deng Xiaoping first proposed the concept of "one country, two systems." The main content of "one country, two systems":"One country" means that China's sovereignty and territory must be complete and cannot be divided. China is a unified country. In the international arena, China can only be represented by the People's Republic of China. The "two systems" are within the unified People's Republic of China, the mainland implements the socialist system, and Taiwan, Hong Kong and Macao retain the original capitalist system. (2)The basic contents of "one country, two systems" are as follows: First, the premise and foundation of "one country, two systems" is one country, that is, the People's Republic of China. Only the People's Republic of China and its Central People's Government can represent China internationally. Second, the two systems coexist, and the main body of the country is the socialist system. Third, the special administrative regions established under "one country, two systems" enjoy a high degree of autonomy.