What do people in some places mean by calling themselves Hakkas?

Hakka is a characteristic ethnic group of Han nationality, and it is also one of the most widely distributed and far-reaching ethnic groups of Han nationality in the world. It is distributed in Guangdong, Jiangxi, Sichuan, Guangxi, Hunan, Taiwan Province, Hainan, Fujian and some counties in Hong Kong, such as Meizhou, Heyuan and Huiyang, and it is distributed in more than 20 counties in/kloc-0. Ancestors lived in the Yellow River valley, and went south in large numbers in the late Western Jin Dynasty (early 4th century) and the late Tang Dynasty (late 9th century) due to war. /kloc-after the demise of the southern song dynasty in the 0' s and 270' s, it moved to Jiangxi, Fujian and Guangdong. Call themselves "Hakkas" or "Lairen" to distinguish them from the locals. Hakka dialect is one of Chinese dialects, which retains more ancient Chinese phonology. Folk songs have a unique style. Hakkas keep their own customs and traditions in the area where they live. Women are full of energy, participate in labor production, are not bound by feudal bad habits, and are brave in making progress. In modern times, after the failure of the Taiping Rebellion, many Hakkas were forced to disperse in a wider range, and some migrated to Nanyang to live.

There are many theories about the origin of Hakka, mainly including Hakka Zhongyuan theory and Hakka mixed-race theory. The theory of Hakka Central Plains holds that the main body of Hakka people is immigrants from the Central Plains, while the theory of Hakka aborigines holds that "Hakka * * is the same main body produced by the integration of Han people who moved south and ancient Vietnamese immigrants in the triangle area of Fujian, Guangdong and Jiangxi, and its main body is the ancient Vietnamese living in this land, not a few Central Plains people living in this area". Since the Song Dynasty, the Han nationality in the Central Plains moved southward on a large scale, passing through southern Jiangxi and western Fujian to Meizhou, and finally formed a relatively mature and stable Hakka family. Since then, Hakkas, based in Meizhou, have moved abroad in large numbers and moved to the whole country and even the rest of the world.