Trần Nhân Tông
The Champa Kingdom decided to accept the supremacy of the Yuan dynasty and also established a tributary relationship with the Yuan. In 1305, Cham king Chế Mân (r. 1288 – 1307) married the Vietnamese princess Huyền Trân (daughter of Trần Nhân Tông) as he ceded two provinces Ô and Lý to Đại Việt.