Hồ Quý Ly's reforms and swift collapse
Hồ Quý Ly rose as a minister at the Trần court, consolidated power through purges, moved the capital to a new stone citadel at Tây Đô in Thanh Hóa, and took the throne in 1400. He issued paper currency, capped private landholdings and slave ownership, and curbed the aristocracy and the Buddhist establishment.