The wars with Champa along with the Mongols left Đại Việt fatigued and bankrupt. The Trần relatives was in turn overthrown by among its very own court officials, H�?Quý Ly. H�?Quý Ly pressured the final Trần emperor to abdicate and assumed the throne in 1400. He adjusted the region name to Đại Ngu and moved the capital to Tây Đ�