**

His research on historical data is admirable. For example, he pointed out that Li Yan may not have existed, and that Shen Wansan was from the Yuan Dynasty, etc., Which are all eye-catching. Moreover, he also discussed important issues such as the number of cultivated land in the early Ming Dynasty, which was of great help in understanding the land system and social economy of the Ming Dynasty. Reading this book is like chatting with a wise man, which allows you to think more deeply about history.

After chewing the souvenir. Mr. Gu's research on history is extremely rigorous and serious, but his evaluation of Li Zicheng and Zhang Xianzhong is too high.

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