Wuchang (wō-chäng) [key], former city, since 1950 part of Wuhan, E Hubei prov., China, on the right bank of the Chang River at the mouth of the Han. It is an administrative and cultural center, with diverse industries. The oldest of the three Wuhan cities, it dates from the Han dynasty (200 B.C.–A.D. 200). The first outbreak of the Revolution of 1911, which led to the formation of the Chinese republic, occurred there on Oct. 10. The day is celebrated as the Double Tenth, the tenth day of the tenth month. The city's numerous institutions of higher learning include Wuhan Univ.