I remember 1993, I went to a professor's house in a university in Beijing, which seemed to be a house with two rooms and one living room. When I walked into the house, it seemed to be a warehouse full of books. There are several rows of bookshelves in the living room, and complete sets of books are stacked on the bookshelves, which are arranged vertically inside and horizontally or stacked outside. The corner of the living room is full of books. In the living room, there is a big table and a sofa, one long and two short. There are also books on the desk and sofa, which are all closed, and most of them are open and locked. After we were seated, the teaching aid took out half a watermelon from the kitchen. The pulp of watermelon was cut into small squares with several toothpicks inserted on it. The professor held up a piece for everyone to "eat melon" and "eat melon", and each of us symbolically inserted a piece with a toothpick. During the conversation, I noticed that there were also books everywhere in the two bedrooms. I can't see anything in other living facilities. I went to the bathroom because of the long conversation. Surprisingly, there is also a small bookcase in the bathroom with open or closed books on it. I have never seen such a luxurious scholar in my life.