Shizishan District (simplified Chinese: 狮子山区; traditional Chinese: 獅子山區; pinyin: Shīzishān Qū) is a former district under the administration of Tongling City, Anhui Province, People's Republic of China. It has a total area of 53 square kilometres (20 sq mi), and a population of approximately 70,000 people. The district's postal code is 244031.It was merged with Tongguanshan District to form Tongguan District in October 2015.[citation needed]