Wuchang Uprising
During the Wuchang Uprising in 1911 that heralded the Republic of China, the various revolutionary armies had different flags. Lu Hao-tung's "Blue Sky with a White Sun" flag was used in the southern provinces of Guangdong, Guangxi, Yunnan, and Guizhou, while the "18-Star Flag", "Five-Colored Flag", and other designs were used elsewhere.