Is China's domestic labor migration increasing or narrowing the regional economic disparities? The book draws a definitive conclusion. This thinking process is also useful for studying the economic impact of international labor migration. What is the impact of China's energy saving and environmental protection industry alliance network on innovation? A quantitative study has been done in this book. How is the consumption of Chinese cigarettes and alcohol impaired on national welfare? This book finds that the value of production and consumption of tobacco and alcohol is far less than its harm. The most hidden loss is medical expenses beyond the basic level. In addition, the book also made economic accounting for China's environmental pollution.