Introduction to Shou Jingwu's study: Mr. Shou Jingwu's study room is a typical study room layout of a private school teacher's home. It is equipped with special bookcases for "Twenty-Four Histories", ordinary bookcases, study utensils, etc. There is a plaque of "Sanyu Zhai" hanging on the forehead beam in the room. The meaning of "Sanyu" is taken from Pei Song's annotation in "Three Kingdoms", which is what Dong Yu said, "In order to learn, you should take more than three years, winter means the rest of the year, and night means the day. "The clouds and rains will be sunny." This means that people should use all their spare time to study hard.