The wars with Champa plus the Mongols left ??i Vi?t exhausted and bankrupt. The Tr?n household was consequently overthrown by one of its individual courtroom officials, H??Quý Ly. H??Quý Ly forced the last Tr?n emperor to abdicate and assumed the throne in 1400. He transformed the state identify to ??i Ngu and moved the cash to Tây ?ô, Western