After the Yangtze River ferry was lost, the Yilou River (Guazhou Canal) was connected to the south, and the Yiyang River was connected to the east and west in the north, which was still the hub of land and water transportation. Emperor Yangdi opened the Beijing-Hangzhou Canal, which runs through the Yangtze River Tianjin (Bridge). At this time, the city of Yangziqiao Town has a considerable scale. After Yang Guang, Emperor Yangdi, chose Yangzi Bridge as the attached capital, built a palace, built Linjiang Palace, and made a famous uterus, which contained Ninghui Hall and Xuanzhu Pavilion. It was really magnificent and magnificent.

From two years to thirteen years (66-617) in February, Emperor Yangdi went to Yangzi Bridge to drive Linjiang Palace three times. Therefore, in the first year of Yongchun in Tang Gaozong (682), Yangzi Town in Jiangdu was taken as Yangzi County. Yangzi Town is the capital of Yangzi County, and the city is more prosperous.

Yangzi Town is the capital of Yangzi County, and it is also in the water transportation with Jingkou on the other side, and it manages the driving department of post administration. Therefore, a land-and-water post station is set up here, named Lindu Post, also known as Yangzi Post, in order to prepare officials who travel from south to north and messengers who deliver official documents, and change to boats, horses and horses here.