The wars with Champa and the Mongols remaining ??i Vi?t exhausted and bankrupt. The Tr?n family members was subsequently overthrown by among its individual courtroom officers, H??Quý Ly. H??Quý Ly pressured the final Tr?n emperor to abdicate and assumed the throne in 1400. He altered the country name to ??i Ngu and moved the capital to Tây ?ô,