Introduction to the Lin'en Gate: The Lin'en Gate is the second gate in the inner city of King Huang's Mausoleum. It is built on the same central axis as the Mausoleum Gate. It is a four-couplet and three-door wooden structure with roof-mounted eaves. The front part of the inner city is a rectangular cemetery, and the back part is a circular tomb, symbolizing the round sky and the square place. King Lu Huang, who died young, actually had a prosperous population after his death, and it was passed down to thirteen kings in ten generations. In 283, he was hereditary King of Lu, which was also rare among the princes of the Ming Dynasty.