Introduction to the Third Hall: There is a small courtyard behind the Second Hall. Two towering cypress trees stand side by side on both sides. Each of the six stone carving basins has a strange-shaped Taihu stone. The north room of this courtyard is the Third Hall. The third hall is also called the exit hall. It is the place where Duke Yan Sheng meets with officials of the fourth rank and above. It is also the place where they deal with internal disputes within the family and punish the servants in the palace. The east and west side rooms of this courtyard each have an entrance courtyard, and the east is the registration room in charge of the palace. Inside the acre deed is the secretary, who is in charge of the general affairs and finances of the government; to the west is the study, which was the document and archive room of the government at that time.