[Yazhou Covered Bridge] Also known as Ya'an Covered Bridge, it is named after Ya'an Ancient City because of the location of Ya'an. It is the longest and largest covered bridge in China. It is a landmark building in Ya'an City. The covered bridge is on the Qingyi River, 22 meters wide, 240 meters long, and the bridge is an antique building on the overall second and local three floors. After the bridge is built, the ground floor can provide a considerable commercial area in addition to meeting the pedestrian traffic function.