Not all of them are closed. According to the website of Tianjin Municipal People's Government, before the winter heating period in 2023, the fields and wells that do not have the conditions for recharge will be shut down, not all of them will be shut down. Tianjin, also known as Jingu and Jinmen, is a provincial administrative region, municipality directly under the Central Government and a national central city in People's Republic of China (PRC).