Introduction to the turret: The turret is a unique landscape in the Xu family's ancient residential complex in Changyang. It is a defensive building built by the Xu family to prevent war and foreign robbers. The tower is 15 meters high, 7.6 meters long and 5.4 meters wide. There are three floors in total. The base is wider and gradually shrinks upward. The gun tower is surrounded by gun holes. The wooden ladders on each floor lead directly to the cloud platform on the top of the fort. The entire blockhouse is both independent and connected to various residential buildings. There is also a tunnel that leads directly to the hidden place by the river.