The wars with Champa as well as Mongols still left ??i Vi?t fatigued and bankrupt. The Tr?n family members was consequently overthrown by one of its very own courtroom officers, H??Quý Ly. H??Quý Ly forced the last Tr?n emperor to abdicate and assumed the throne in 1400. He transformed the nation title to ??i Ngu and moved the funds to Tây ?ô,