The wars with Champa and also the Mongols left ??i Vi?t exhausted and bankrupt. The Tr?n relatives was in turn overthrown by one of its own court docket officers, H??Quý Ly. H??Quý Ly pressured the last Tr?n emperor to abdicate and assumed the throne in 1400. He adjusted the region title to ??i Ngu and moved the capital to Tây ?ô, Western Funds