Hubei–Henan–Shaanxi Revolutionary Base Area

The Hubei–Henan–Shaanxi Revolutionary Base Area, or the Eyushaan Revolutionary Base Area (simplified Chinese: 鄂豫陕革命根据地; traditional Chinese: 鄂豫陝革命根據地; pinyin: È-yù-shǎn Gémìng Gēnjùdì) was a Communist-controlled revolutionary base area (simplified Chinese: 革命根据地; traditional Chinese: 革命根據地; pinyin: gémìng gēnjùdì) in north-central China that existed from late 1934 to 1937.^: 1 It was a constituent part of the Chinese Soviet Republic, a self-declared sovereign state within the Republic of China. The revolutionary base was located in the mountainous tri-provincial border region between Hubei, Henan, and Shaanxi, from which it gets its name. It spanned a contiguous area including parts of present-day Shiyan in Hubei,^: 2 Sanmenxia and Nanyang in Henan,^: 1 and Shangluo and Ankang, in Shaanxi.^: 2

Red Army forces first took the area on December 8, 1934, and declared the establishment of the revolutionary base area two days later.^: 1 During its existence, the Eyushaan Revolutionary Base Area faced near-continuous attacks from the Nationalist army and local anti-communist guerillas.^: 1 Following the Xi'an Incident, which helped create the Second United Front, Red Army forces from the area left the area to join the front lines against the Japanese invasion.^: 1