Introduction to the screen wall: The screen wall is in the shape of a straight line, located at the southernmost end of the central axis of the guild hall. It faces the street and runs east-west along the street. The wall is 8.6 meters high, 16.5 meters long and 0.65 meters thick. The entire screen wall can be divided into three parts: the platform base, the wall body and the roof of the verandah, which are made of blue bricks and ground bricks butt joints.