According to Netease.com, Tianchang City was named Qian Qiu County in the Tang Dynasty, which has always belonged to ancient Yangzhou and now Jiangsu. However, in the process of re-zoning, Sihong County and Xuyi County were placed in Jiangsu, and in order to give back to Anhui, Jiangsu also placed Dangshan County and Xiaoxian County in Anhui.
In this way, Tianchang City is in an awkward position. Although it is located in Chuzhou City, Anhui Province, most of the plots are horizontally inserted into Jiangsu, and the distance from Jiangsu is closer than that from Chuzhou. Many times, when people go to Tianchang City, they will choose to start from Jiangsu plots such as Nanjing.