The Yuan Dynasty established Mongolia on the basis of Temujin, the leader of Qiyan tribe. At that time, Mongolia was still under the rule of the rulers. Then Temujin led troops to attack the rulers and Xixia, which had begun to decline at that time. In the twenty-second year of Yuan Taizu (1227), Xixia and Yuan Taizong were destroyed in July, and the rulers were destroyed on the tenth day of the first month (1234). At the same time, the West introduced Mongolia.

After that, it formed a country that ruled Eurasia, and its territory exceeded that of previous dynasties. Europe called it the Mongol Empire. During the Yuan Dynasty, a unified multi-ethnic country was further consolidated, and its territory surpassed that of previous dynasties. The territory of the Yuan Dynasty started from the Sea of Japan in the east, the South China Sea in the south, Tianshan Mountain in the west and Lake Baikal in the north.

Subordinate country:

The vassal states of the Yuan Dynasty were Korea, Myanmar, Annan, Zhancheng and the four great khanates. Among them, there are two directly subordinate vassal States, namely, the Koryo Dynasty and the Bagan Dynasty in Myanmar, which are divided into the eastbound province and the central province in Myanmar. In northwest China, 1268, the Wokuotai Khanate Haidu attempted to recapture the Khanate, and joined hands with Qincha Khanate and Chahetai Khanate to fight against the Yuan Dynasty, which was known as the Haidu Rebellion.

Until 1304 Yuan Chengzong period, the Yuan court reached a peace agreement with the Three Great Khan States, and together with the Yili Khan State, it recognized the suzerain status of the Yuan Dynasty and became a vassal state of the Yuan Dynasty. In addition, Yuan Chengzong also gave the monarch of Ilihan a Chinese seal, such as "The True Emperor and the Treasure of Wan Yi", which essentially recognized its independence.

During the Yuan Wuzong period of 13 10, the Yuan Dynasty and the Chahetai khanate jointly attacked and wiped out the Wokuotai khanate. During Yuan Wenzong's reign, when compiling the Grand Ceremony of Shi Jing, Qincha khanate, Chahetai khanate and Yili khanate were listed as vassal states of the Yuan Dynasty.

Reference to the above content: Baidu Encyclopedia-Yuan Dynasty