Why was Xitang renamed Nanxun?

It hasn't been renamed yet. According to the official website, Jiaxing Municipal People's Government, Xitang and Nanxun are all ancient towns in the south of the Yangtze River. They are two different places, and there is no renaming relationship. Xitang, located in Jiashan County, Jiaxing City, Zhejiang Province, is an ancient town with a history of thousands of years, which is famous for its unique water town style and rich cultural heritage. Nanxun, located in Nanxun District, Huzhou City, Zhejiang Province, is famous for its prosperous business and exquisite garden architecture.