This book analyzes the characteristics of China's economic operation in the new era and explores Xi's thought on China's development. The book consists of six parts. The first part puts forward the guiding principles and main contents of political economy of socialism with Chinese characteristics in the new era; the second part conducts the epistemology and methodology; the third part reveals the big logic of the new normal of economic development from the time and space dimension; and the fourth part examines the purpose, motivation, necessary conditions and measurement scale of development according to the new development concept; the fifth part discusses the path of building a modern economic system; the sixth part focuses on what China Wisdom and China solution could contribute to the global governance and promoting global development.