Erlangpo introduction: Dongmen Street and Erlangpo, the main streets of Qiao Street, are both 8 meters wide and 724 meters long. The central axis of the street is paved with white stone slabs. The width is about 1.5 meters, and the two sides are paved with bluestone slabs. become. The edge near the building is lined with white stone as a drainage ditch. The two sections of the slope are made of stone steps.