Divided into eight lectures, this book discusses topics covering macroeconomics and finance, farmers' income, employment, enterprise development, western development, education, business managers, and social trust, reflecting Li Yining's reflections in related fields in a comprehensive manner. This book is a summary of Li Yining's lectures at Peking University. Featuring in-depth analysis and  a down-to-earth style, the book is demonstrated with vivid and relevant examples.