 In 1736, the Qianlong Emperor abolished the Viceroy of Sichuan and recreated the office of Viceroy of Chuan-Shaan.In 1748, he split the Viceroy of Chuan-Shaan into Viceroy of Sichuan and Viceroy of Shaan-Gan, but reversed the changes again in 1759 and established a separate Viceroy of Gansu, with its headquarters in Suzhou (肅州; present-day Suzhou District, Jiuquan, Gansu).In 1760, the Qianlong Emperor abolished the Viceroy of Gansu and restored the two offices of Viceroy of Sichuan and Viceroy of Shaan-Gan.