Introduction to Zhaimen: Dongzhaimen is located at the hub of external traffic for the entire Tuanshan residential complex. It serves as a natural barrier and defense function. It was built during the Guangxu period of the Qing Dynasty. The architectural shape adopts a three-story archway style single-hole arch. Gate civil structure. There are also gun holes on the gate tower, which has the potential of "one man can guard the gate, but ten thousand men cannot open it".