Introduction to Shanmen Archway: Shanmen consists of three gates, 10.6 meters high and 13.6 meters wide. The words "Shen Zhaohai Biao" on the front of the middle door are written by Emperor Yongzheng; the words "Anlan on the Sea" on the front of the left and right doors are written by Emperor Jiaqing, and the words "Ze Zhao Haiyu" are written by Emperor Daoguang; the words "Tianbo Liyun" on the back are written by Emperor Xianfeng The handwriting, "Together with Heaven" is written by Emperor Guangxu. There is also a couplet in the middle gate: "Loyal and faithful, wading through the waves, Zhouli, Wuzhou, Yaotai, God Zhao, the sun and moon, directing Shui Boyu and Wu."