1, Emperor Yongle and Mr. Liu Zhuang had a legal relationship. In the form of answering questions, I defended my face and destiny. It's a mode of learning from each other, and it's difficult to learn from each other. Teacher Liu Heng made comments from the perspective of learning from modern people, and supplemented them according to the original work.
2. The Hundred Questions of Yongle is one of the ancient picture books. This book is a question and answer made by Emperor Yongle of the Ming Dynasty, from princes and nobles to ordinary people, because he likes to learn from the famous photo scholar Mr. Yuan Liuzhuang.