Introduction to Huilongchang Old Street: Huilongchang is an ancient street with bluestone slabs. It is surrounded by mountains and rivers, winding for more than 800 meters. It is named because it looks like a giant dragon. It was a prosperous trade market carefully built by Wei Fu and Tang Dynasty. There were all kinds of opium houses, teahouses, brothels, restaurants and restaurants. Merchants gathered and there were many shops, which were concentrated on this street. Most of the old streets are composed of two connected courtyards, with a firewall at each section of the street.