Mongol conquest of the Song dynasty Mongol conquest of the Song dynasty The Mongol conquest of the Song dynasty under Kublai Khan (r. 1260–1294) was the final step for the Mongols to rule the whole of China under the Yuan dynasty. It is also considered the Mongol Empire's last great military achievement. Before the Mongol–Jin War escalated, an envoy from the Song dynasty arrived at the court of the Mongols, perhaps to negotiate a united offensive against the Jin dynasty, who the Song had previously fought during the Jin–Song Wars. Although Genghis Khan refused, on his death in 1227 he bequeathed a plan to attack the
Religion in the Mongol Empire interests of the next life. Thus he invited Sakya Pandita to his ordo. Prince Kötön was impressed and healed by Sakya Pandita's teachings and knowledge, and later became the first known Buddhist prince of the Mongol Empire. Kublai Khan, the founder of Yuan dynasty, also favored Buddhism. As early as the 1240s, he made contacts with a Chan Buddhist monk Haiyun, who became his Buddhist adviser. Kublai's second son, whom he later officially designated as his successor in the Yuan dynasty, was given a Chinese name "Zhenjin" (literally, "True Gold") by Haiyan. Khatun Chibi influenced Kublai to be converted to