First Mongol invasion of Đại Việt

After conquering Dali, Uriyangkhadai marched down the Thao river, beat Trần Thái Tông at Bình Lệ Nguyên and Phù Lỗ and held the empty capital for nine days, until a Trần counterattack at Đông Bộ Đầu drove the Mongols back north within the second half of January 1258.