The ancient name of Zhennan Pass is located 18 kilometers southwest of Pingxiang City. It was founded in Hongwu Period of Ming Dynasty. It is one of the nine famous passes in ancient China, and the only one of the nine passes that is still functioning as a customs clearance. Friendship Pass is a tower-like building, 22 meters high, the bottom is a solid wall, the middle is an arch-shaped gate, the left side of the closure is the Zuoluo mountain wall, the right side is the right auxiliary mountain wall, especially the foot of the two mountains separated by the giant python, with great momentum. The three big characters "Friendship Pass" on the arch are written by Chen Yi himself.