Gaoyou Tongcheng is now a world heritage site, a national tourist attraction and a key national cultural relics protection unit. In 2014, it was listed as an important component of the Beijing-Hangzhou Grand Canal, the 46th World Heritage Site in China. It was built in Hongwu, Ming Dynasty, in 1375. It is located in the east of Nanmen Street, Gaoyou City, Jiangsu Province (Gaoyou City South Historical and Cultural District). It is the "living fossil" of China Posthouse.[1], the largest in the country. The best preserved ancient station, a building left over from the Ming Dynasty. Yu, the ancient garden of food, water, etc.