Both Waqi and Tatar refer to Mongols, but they are both branches of Mongols. Waci was the appellation for Inner Mongolians in China in the middle and late Ming Dynasty, and Tatar was the appellation for Inner Mongolians in China from the Yuan Dynasty to the early Ming Dynasty. Genghis Khan established the Mongolian Empire, which governed four khanates. Eastern Mongolia was directly ruled by Khan and his subordinate ministries, and was called Tatar. Because of the Mongol Empire's crusade to the west, for example, the Tatars who moved to the Volga River basin combined with the Qincha people who once spoke Turkic and the Bulgarians of the Volga River to form today's Kazan Tatars, while the Tatars who stayed in the Yenisei River merged with the local Altai people and Hakkas to form the Siberian-Yenisei Tatars. Tatars who moved to Russia after being conquered by Genghis Khan, that is, Russian Tatars, are now Tatars in China. West Mongolia is composed of various ministries to which Waci belongs, which is called "Waci" in history. Because of the marriage relationship with Genghis Khan's "golden family", he has always enjoyed the special status of "seeing the king personally" in Mongolia. /kloc-In the middle and late third century, many people in the Ministry supported Alibaba Brother and Haidu against Kublai Khan, so they recruited Kublai Khan to suppress them. In the14th century, it declined after being defeated by the late Jin Dynasty, and now there is no tile thorn. According to the place of residence, the Tatar Department lives in the south of Lake Baikal and in most areas of Mongolia. Warab lived in the western part of today's Mongolian People's Republic and Junggar Basin. There is another Mongolian tribe, Wulianghabu, who lives in the present Laohahe River (in Inner Mongolia) and Liaohe River Basin.