The wars with Champa and also the Mongols left ??i Vi?t exhausted and bankrupt. The Tr?n family was subsequently overthrown by considered one of its personal court officials, H??Quý Ly. H??Quý Ly forced the final Tr?n emperor to abdicate and assumed the throne in 1400. He modified the nation name to ??i Ngu and moved the funds to Tây ?ô, Wester