Introduction to Ling'en Gate: Ling'en Gate is the main entrance of the inner city. It is three rooms wide and is a hilltop-style building with a single eaves. There is a large plaque inside the door with the words "Ling'en Gate" written on it. Below it is a stone-carved Xumizuo platform surrounded by white marble railings. The decoration is very gorgeous. There are eight-shaped glazed screen walls on the east and west sides of Ling'en Gate, with Qionghua on the front and double dragons on the back. Thanks to the screen wall, the Ling'en Gate looks more exquisite and gorgeous. Unfortunately, the building was destroyed by war in the late Ming Dynasty.