The Song and Yuan Dynasties were a period when the ethnic integration in China feudal society was further strengthened and the feudal economy continued to develop. In 907, Lu Ye Abaoji, the leader of the Khitan, established the Liao Dynasty and made Beijing its capital. After 960, Zhao Kuangyin, the general of the Zhou Dynasty, put on a yellow robe and established the Song Dynasty with Tokyo as its capital. After the establishment of the Northern Song Dynasty, the division of the Five Dynasties and Ten Countries ended. 1038, Tangut leader Li Yuanhao established Xixia. In the mid-Northern Song Dynasty, there were financial difficulties and other crises. In order to overcome the ruling crisis, Wang Anshi carried out political reforms. 1 1 15 years, the leader of the nuzhen nationality, akuta, established the Jin Dynasty.
1 127 Jin Jun went south, ending the rule of the Northern Song Dynasty. The rule of the Southern Song Dynasty began. The confrontation between the Southern Song Dynasty and the Jin Dynasty led to the new economic development of the North and the South. At the same time, it also strengthened economic and cultural exchanges. 1206, Temujin, the leader of the Mongols, unified the Mongolian ministries and established the Mongolian regime. Genghis Khan and his descendants launched a large-scale war. Kublai Khan established the Yuan Dynasty on 127 1 and unified the whole country on 1279.