Are both  Panzhou and Tianchang in China?
Tianchang Tianchang is a Sub-prefecture-level city on the Yangtze River, 290 km northwest of Shanghai, it's a part of Yangtze River Delta Economic Zone. It is under the administration of Chuzhou, Anhui Province, China.
Changshan County () is a county under the jurisdiction of Quzhou city in Zhejiang Province of the People's Republic of China. The district's total area is 1099 square kilometers, and its population is 320,000 people. The district's postal code is 324200. The district government is located at 29 Shengli Road, in the town of Tianma.