Stone wall introduction: The building is 11 meters high and divided into three floors. The wall width on the first floor is 0.92 meters and the wall width on the third floor is 0.44 meters. The exterior walls on the first and second floors are stone walls, and the exterior and interior walls on the third floor are bricks. wall. Because the outer wall of the building is a stone wall, the building is commonly known as the Stone Building.