After the 1928 assassination of Yang Zengxin, governor of the semi-autonomous Kumul Khanate in east Xinjiang under the Republic of China, he was succeeded by Jin Shuren. On the death of the Kamul Khan Maqsud Shah in 1930, Jin abolished the Khanate entirely and took control of the region as warlord. Corruption, appropriation of land, and the commandeering of grain and livestock by Chinese military forces were all factors which led to the eventual Kumul Rebellion that established the First East Turkestan Republic in 1933. In 1934, it was conquered by warlord Sheng Shicai with the aid of the Soviet Union. Sheng's leadership was marked by heavy Soviet influence, with him openly offering Xinjiang's valuable natural resources in exchange for Soviet help in crushing revolts, such as in 1937. Although already in use, it was in this period that the term "Uyghur" was first used officially over the generic "Turkic", as part of an effort to "undermine potential broader bases of identity" such as Turkic or Muslim. In 1942, Sheng sought reconciliation with the Republic of China, abandoning the Soviets.