On April 9, 1991, the Fourth National People's Congress approved the National Economic and Social Development Decade Plan and the Eighth Five-Year Plan. (right) Yang Xianquan, Jiang Zemin, Wili, Li Zhen, Li Ping, etc. On April 9, 1991, the Fourth National People's Congress approved the National Economic and Social Development Decade Plan and the Eighth Five-Year Plan. The overall agenda of the "Five-Year Plan" is to vigorously improve economic benefits and optimize the economic structure, so that the national GDP is calculated at unchanged prices, and so on until the end of this century, twice as compared with 1980. Living level from Wenzhou to Beijing, for the beginning of the 21st century established the material foundation for China's economic and social sustainable development