The wars with Champa plus the Mongols remaining ??i Vi?t fatigued and bankrupt. The Tr?n family was consequently overthrown by considered one of its personal court officials, H??Quý Ly. H??Quý Ly forced the last Tr?n emperor to abdicate and assumed the throne in 1400. He transformed the place identify to ??i Ngu and moved the cash to Tây ?ô, We