Introduction to Jiangjunmen: Jiangjunmen is composed of two "Hehe" gates. The door frame on the east side is Mendang, and the west side is Hudui, which means "doors should be paired with households". On the forehead of the General Gate is a vertical plaque with the words "Imperial Envoy's Di" on a blue background inscribed in gold by Emperor Guangxu himself, which means the residence of the imperial envoys to Britain, France, Italy and Belgium.