胡季犛
In mid-late 14th century, the kingdom of Đại Việt (north Vietnam) faced series of troubles ecological breakdown. This led to the rising of a radical intellectual and reformer, Hồ Quý Ly (c. 1336 – 1408). In 1400, Hồ Quý Ly deposed and massacred the Trần house before usurping the throne. After taking the throne, Hồ Quý Ly renamed the country from Đại Việt to Đại Ngu. In 1402, he abdicated the throne in favor of his son, Hồ Hán Thương.