This book is Li Yining's self-selected research results from 1980 to 1999, a total of 35 articles, including published papers and public speeches. The content involves important economic issues such as the relationship between education and economic development, ownership and economic system reform, coordinated development of economy and environment, economic growth and fluctuation, income distribution reform, etc. A considerable part of the discussion has become an important document on current reform. This book briefly reflects Li Yining's ideological process from 1980 to 1999. It has important reference value for grasping the ins and outs of China's economy and reform and further gathering consensus on reform.