Ryan Fort is commonly known as the Wang Tuan Fortress. It is located in the northeastern part of the Hexi Corridor. The layout of the castle is One Piece Dangdang, which is shaped like Phoenix Single Spreading Wings. It has profound meaning and is the most complete and uniquely designed landlord manor in China. First, the collection of residential buildings and fortifications as one, combining practicality and artistry. The north and south walls are high and short, and they are called "Phoenix single wings", meaning the beauty of the exhibition without flying away (the wings are flying). It is enough to see the fortune of the owner in the pursuit of fame and fortune.