Ulanhot is a county-level city and the administrative center of Hinggan League in the east of Inner Mongolia, China. Formerly known as Wangin Süm, the city became the first capital of Inner Mongolia, the first autonomous region in China, on 1 May 1947, until the regional capital moved to Zhangjiakou in late December 1949; the regional capital moved again in June 1952 to Hohhot, which remains the capital to this day.