The Hall of Abstinence, Zhaigong in Chinese, is a group of houses located on the westernside of the temple. It was first built in 1420 and rebuilt three times in the dynasty. Outside its two surrounding walls there are a moat and several hundred rooms for stationing the imperial guards. Only one stone bridge was accessible to the inner part of the palace. Inside the walls there are a bell tower, living quarters, and many other houses for various purposes.