Society of the Mongol Empire cook and sew for their husband, their children, and their elders. A wife's devotion to her husband continued after his death. Remarriages during the Mongol Empire did not occur often. Instead, her youngest son or her youngest brother took care of her. However Genghis Khan had allowed remarriage of widows including the levirate. Mongol women enjoyed more freedoms than those in their foreign vassal countries. They refused to adopt the Chinese practice of footbinding and wear chadors or burqas. The Mongolian women were allowed to move about more freely in public. Toward the end of the Mongol Empire, however, the
First Mongol invasion of Burma encircle the Song dynasty of China. When King Narathihapate refused, Emperor Kublai Khan himself sent another mission in 1273, again demanding tribute. It too was rejected. In 1275, the emperor ordered the Yunnan government to secure the borderlands in order to block an escape path for the Song, and permitted a limited border war if Pagan contested. Pagan did contest but its army was driven back at the frontier by the Mongol Army in 1277–78. After a brief lull, Kublai Khan in 1281 turned his attention to Southeast Asia, demanding tribute from Pagan, the Khmer Empire, Đại Việt and Champa.