Claim: Suyu, located in Suqian prefecture, Nanjing, China, has 498,700 total population in 2019, and covers 672.26 km (259.56 sq mi) land area.
Evidence: Suyu District (simplified Chinese: 宿豫区; traditional Chinese: 宿豫區; pinyin: Sùyù Qū) is one of two districts of Suqian, Jiangsu province, China. 
Jiangsu