Dongying Xicheng Xisan Road. Dongying human tricycles Wholesale Market, according to Baidu map, is located at West Third Road, Xicheng, Dongying, and you can drive there. Dongying, a prefecture-level city in Shandong Province, the central city of the Yellow River Delta in China and an important oil base in China approved by the State Council. Dongying is located in the east of China.