Huainan

Huainan is a prefecture-level city in north-central Anhui province, China, named for the Han-era Principality of Huainan and known for its coal industry and thermal power plants as one of the core cities of the Hefei Metropolitan Circle. At the 2020 census its population was 3,033,528 across an area of 5,530 square kilometers, with about 1.87 million people in its built-up area, and it is regarded as the hometown and birthplace of tofu. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/