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This book is very interesting! By studying the changes in official administration in Yunnan, it allows us to see the monarchical governance ideas of Yongzheng and Qianlong dynasties. The author Sun Xiao is very good, and the ideas in the book are very unique, for example, he pointed out the impact of the reform of agrarianism on Yunnan. This book is like a window that allows us to understand the changes in Yunnan during that period. It is worth reading!