Architectural introduction: Openness and smoothness are the typical features of Du Shoutian's former residence. The Du family courtyard has not only gates but also passages in all directions, extending in all directions. In the compound, each small courtyard not only has a back door and a side door, but is also connected by doorways and corridors. No part of the courtyard is closed, the space is relatively independent, and the atmosphere is connected with every household. The entire courtyard reveals a kind of family happiness, a kind of intimacy, and a kind of warm harmony where brothers and sisters live in harmony.