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Macheng is a city in northeastern Hubei province, People's Republic of China, bordering the provinces of Henan to the north and Anhui to the northeast. It is a county-level city under the administration of Huanggang City and abuts the south side of the Dabie Mountains. The city's administrative area covers about 3,747 square kilometres (1,447 sq mi), and includes some 704 villages and small towns. Total population was 893,654 at the 2020 census.