Introduction to ancient residences: The six ancient residences in Langshan were built in 1882 AD (the eighth year of Guangxu reign of the Qing Dynasty). They are arranged westward in the village and face north to south, forming a fan-shaped ancient residence 200 meters long and 100 meters deep. The building complex, each ancient residence covers an area of about 300 square meters. Four of the six ancient residences are basically well preserved.