Introduction to Renji Trading Company: Renji Trading Company, run by the British, is an existing foreign company in the ancient city of Dangar. It is also a historical witness of the old Chinese foreign merchants doing business in Huangyuan. During the Jiaqing and Daoguang years of the Qing Dynasty, business in the ancient city of Dangar was at its peak, with the annual transaction volume reaching 5 million taels of silver. Businessmen from Britain, the United States, Russia, Belgium and other countries, as well as giant merchants from Beijing, Tianjin and Shanxi, came here to set up foreign firms. , doing business in the village. In addition to Renji Trading Company, Renji (English), Meizusi (Russian), Xintaixing, Pinghe, Yihe, Curie, Ruiji (American), Vali (Turkish), etc. were also famous foreign firms at that time.