Tusi was tribal leader recognized as an imperial official by the governments of the Yuan (1271-1368), Ming (1368-1644), and Qing dynasties.

In the past, Xisuo villagers took orders from and worked for the ruling chieftain families. They were silversmith, blacksmith, carpenter, servant, tenant and so on.

With the area's liberation in 1951, the chieftains no longer existed and the manor fell into disuse. The villagers turned to make a living by cutting down forests and selling woods then after.