The postcode of yongcheng city is 476600, yongcheng city, which is a county-level city under the jurisdiction of Shangqiu City. It is named after the frequent floods in this city, which means "the city of eternal consolidation". Yongcheng is located in the easternmost part of Henan Province, at the junction of Henan and Anhui. Mangdang Mountain starts from the north, surrounded by water in the south, connected with Xu Huai in the east and Song Liang in the west. Is the bridgehead of Henan province, known as the "gateway to eastern Henan"? Known as the "Pearl of Eastern Henan".