The theory of Hakka Central Plains holds that the main body of Hakka is immigrants from the Central Plains, while the theory of Hakka aborigines holds that "the Hakka * * * is the same body produced by the amalgamation of the Han people who moved south and the ancient Vietnamese immigrants in the triangle area of Fujian, Guangdong and Jiangxi, and its main body is the ancient Vietnamese people living in this land, not a few Central Plains people living in this area".

From the Song Dynasty, the Han people in the Central Plains moved southward in a large scale, and arrived in Meizhou through southern Jiangxi and western Fujian, and finally formed a relatively mature and stable Hakka family. Since then, the Hakkas have taken Meizhou as their base and moved abroad in large numbers to the whole country and even all over the world. The "three Hakka States" are Jiaying, Ganzhou and Tingzhou.

Five major migrations:

1, the first great migration: at the end of the Western Jin Dynasty, it moved from the Yellow River basin (with the Central Plains as the core) to Jianghuai and the middle and lower reaches of the Yangtze River.

2. The second great migration: at the end of the Tang Dynasty, it migrated from Jianghuai and the middle and lower reaches of the Yangtze River to central and southern Jiangxi, and some of them crossed the Wuyishan Mountains and entered western Fujian.

3. The third great migration: the southern crossing of the Song Dynasty and the end of the Song Dynasty, that is, a large-scale migration from central and southern Jiangxi to western Fujian and even eastern Guangdong; The war at the end of Yuan Dynasty and the beginning of Ming Dynasty moved from western Fujian to eastern Guangdong on a large scale.

4. The fourth great migration: from eastern Guangdong and western Fujian to central Guangdong, western Guangdong, Sichuan and Taiwan Province in the late Ming and early Qing dynasties.

5. The Fifth Great Migration: In the late Qing Dynasty, it migrated to southeast Guangxi and overseas.