Architectural introduction: The ancient buildings in Longtan are distributed in a long shape from south to north. Residential houses with brick and wood structures are lined up in rows, which are very beautiful when viewed from a bird's eye view. The wooden structure houses in the town are generally "three pillars and four chess", "three pillars and six chess" or "five pillars and eight chess". Only wealthy families have courtyards with four-in-one patios. The central hall in the courtyard is a place for worshiping ancestors, welcoming guests, and conducting weddings and funerals; the floor paved with wooden planks is a place for reading or displaying items; the counter decorated with wooden planks facing the street is a place where the owner sells goods, which is quite particular. .