Located 4 kilometers south of Shanhaiguan City, Hebei Province, Laolongtou is the eastern part of the Great Wall of the Ming Dynasty. It faces the Ninth Gate of the Great Wall of the Water to the east. It is like a dragon's head into the sea, making waves and dancing waves. Therefore, it is called Laolongtou. It is a national AAAA-level tourist attraction. The old dragon head is in a high terrain with Qi Jiguang, the general soldier of Jizhen Town in Ming Dynasty. The most famous building is the Chenghai Tower, which is called "the Great Wall is connected with the sea, and people go up to the top of the flying tower 100 feet".