The wars with Champa and also the Mongols remaining ??i Vi?t exhausted and bankrupt. The Tr?n family was subsequently overthrown by among its very own court officers, H??Quý Ly. H??Quý Ly pressured the last Tr?n emperor to abdicate and assumed the throne in 1400. He improved the state title to ??i Ngu and moved the capital to Tây ?ô, Western Fu