The wars with Champa as well as the Mongols remaining ??i Vi?t exhausted and bankrupt. The Tr?n relatives was consequently overthrown by considered one of its own 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 ?�