The wars with Champa along with the Mongols remaining ??i Vi?t exhausted and bankrupt. The Tr?n relatives was subsequently overthrown by considered one of its have court officers, H??Quý Ly. H??Quý Ly forced the final Tr?n emperor to abdicate and assumed the throne in 1400. He modified the region title to ??i Ngu and moved the money to Tây ?ô,