The wars with Champa as well as Mongols still left ??i Vi?t exhausted and bankrupt. The Tr?n family was consequently overthrown by one of its possess court officials, H??Quý Ly. H??Quý Ly forced the last Tr?n emperor to abdicate and assumed the throne in 1400. He adjusted the region title to ??i Ngu and moved the capital to Tây ?ô, Western Fund