There have always been different opinions about the source of Yao nationality, including "Mountain Yue Theory", "Wu Xi Man Theory" and various sources. However, most people think that the Yao nationality is related to Man Jing and Wu Lingren in ancient times. After Qin Shihuang established a unified multi-ethnic centralized country, he adopted the policy of "garrison" for people in frontier ethnic areas, and sent a large number of Han people from the Central Plains into Changsha and Wulingman areas, bringing advanced production tools and technologies and promoting the development of production in these areas. In the Western Han Dynasty, the barbarians in Wuling area paid taxes by the amount of Ding, but in the later Han Dynasty, they still levied "stubborn taxes" on the barbarians. In the first year of Yonghe (136), due to exorbitant taxes and levies, Wu Lingren, including Yao Zu, revolted one after another. During the Southern and Northern Dynasties, the ancestors of the Yao nationality were distributed in the vast areas of Shouchun (now Shouxian County, Anhui Province) in the east, Shangluo (now Shangxian County, Shaanxi Province) in the west and Ruying (now eastern Henan Province and northwest Anhui Province) in the north. During this period, the economic and cultural exchanges between Yao and Han were close. In the Tang Dynasty, Yao nationality was mainly distributed in Hunan, Guangdong and Guangxi, and was called Mo Yaoman in history. Moni is mainly engaged in agricultural production. The Song Dynasty adopted the policy of "controlling foreigners with foreigners" to control Yao areas. Under the rule of local officials or local leaders, some Yao areas accelerated the process of feudalism. In the history of Yao nationality, there was an important migration. In the Yuan Dynasty, officials sent people to collect taxes. The local Yao people were so hospitable that officials forgot to go back to the yamen. The yamen mistakenly thought that the Yao people killed the officials who came to collect taxes, so they sent troops to destroy them, and the Yao people were forced to migrate and move to different places. Before the meeting, they divided the horn into twelve sections, in charge of twelve surnames, and then met for a thousand years and returned to their hometown. During the Yuan, Ming and Qing Dynasties, the distribution of Yao nationality has spread all over Guangxi, Guangdong, southwest Hunan and some mountainous areas in Yunnan and Guizhou, and the social and economic development is extremely unbalanced. The fast-developing areas are close to the level of Han nationality areas, while the Yao nationality in remote areas "live with the valley" and even do not engage in farming, and some are still in the stage of primitive social development. Due to the exploitation and suppression of massacres by feudal dynasties, some Yao people fled to the borders of Vietnam, Laos and Thailand in the late Ming and early Qing Dynasties. By the 1970s, some Yao people from Vietnam, Laos, Thailand and other countries immigrated to the United States, France, Canada and other countries. Historically, Yao and Miao have a close blood relationship, which originated from the "Wuling Man" tribe in the Qin and Han Dynasties. Around the Sui Dynasty, the Yao and Miao nationalities living in the present areas of Hunan and Hubei have split into two ethnic groups. Yao nationality in Yunnan moved to Wenshan from Guangdong, Guangxi and Guizhou after the Ming and Qing Dynasties. Later, it moved to the red river basin and Mojiang, Mengla and other places. Many Yao people in Yunnan can speak not only their own language, but also Chinese, Zhuang language and Miao language, which has historical reasons.