The wars with Champa plus the Mongols left ??i Vi?t fatigued and bankrupt. The Tr?n spouse and children was subsequently overthrown by among its personal court officers, H??Quý Ly. H??Quý Ly compelled the last Tr?n emperor to abdicate and assumed the throne in 1400. He transformed the region name to ??i Ngu and moved the funds to Tây ?ô, Wester