Tangma Road, Kaiping Town. Daji in Wujiazhuang, Tangshan is a relatively large-scale market with a large transaction volume and many people. In order not to affect the trip, it is mainly set in a place with convenient transportation, located at Tangma Road, Kaiping Town, Kaiping District, Tangshan City, Hebei Province. Market is a form of commodity trading activities gathered in a specific period, which mainly refers to a form of trade organization left over from the era or region where commodity economy is underdeveloped.