It is reported, West pass big house is the residence of rich businessman more in the past, tall and bright, hall is united in wedlock, adornment is exquisite. There is a qingyun lane on both sides of the big house, taking the meaning of "rising through the clouds". This kind of lane is also called cold lane, fire lane and water lane, etc. It has the functions of ventilation, fire prevention, drainage, daylighting, sunning, traffic, planting flowers and trees and so on. The number of the old houses in Xiguan has changed from more than 800 in the heyday of the late Qing Dynasty to less than 100. Walking around the area, you can still feel the luxury of the rich businessmen in Xiguan.