The Nanguan gatehouse in Fenyang was originally written in three characters: "Nanmen gatehouse", so is the Nanguan gatehouse now. According to Baidu Encyclopedia, Nanguan Tower is a tower on the ancient city wall, and the name or slogan of the tower is usually engraved on the tower to show identity and declare sovereignty. Nanguan Tower is located on Fenyang City Wall in Lvliang City, China. It was built in the Ming and Qing Dynasties and has a history of hundreds of years. It is a famous local cultural landscape.