In 1866, during the French occupation of Mexico the French army under Marshal Bazaine set up the corvée to provide labor for public works in place of a system of fines.
Duke Mu of Qin despatched a large fleet of ships manned by Corvée labour from his capital at Yong (雍) in modern day Fengxiang County, Shaanxi Province.
Like many Isan people and more specifically, other ethnic Lao groups of Central Thailand, the Lao Ga are descendants of slaves and forced corvée labourers brought after the Siamese conquest of the successor kingdoms of Lanxang, mostly from the region of Vientiane.