Shang Tang was first established in Bo (southeast of Shangqiu City, Henan Province). When preparing for the summer, in order to meet the needs of the war, an auxiliary capital with military as the main purpose was established in Bobei, near the junction of Xia Dynasty and Jingshan area, called Jingbo (north of Shangqiu). Before the end of summer, this was the starting point of the gathering of vassal troops in the summer; After summer, soup is known as the * * * master of the world here. According to the two places, later generations called Bo Nan Bo and Jing Bo Bei Bo. In order to eliminate and effectively rule the former summer, Tang established a metropolis in the center of the former summer, which was later called Xibo.