Hakka is not a nation, nor a domain name, but a group, a special and stable group of Han nationality. Hakkas are not ethnic minorities. On the contrary, they originated from the Han nationality in the Central Plains and are a branch of the Han nationality. As a group, Hakkas can be called a clan. As the name implies, Hakkas are "guests at home". They are witnesses of many great migrations in history, and they are called Hakkas only after they have settled far away from their former homeland.

The migration of Han people to the south can be traced back to the last years of the Western Jin Dynasty to the Southern and Northern Dynasties. After the Yongjia Rebellion, China was divided between the north and the south, and the regime changed constantly, and North China was in a long-term separatist war. The complicated political situation and the invasion of nomadic people in the north prompted many Central Plains residents to move south.

The Han people who migrated to the south gradually evolved different languages and customs, mainly divided into Xiang language family and Fujian language family, which were distributed in present-day Hunan and Fujian. The ancestors of Hakkas belong to Fujian immigrants, who settled in the middle and lower reaches of the Yangtze River.

Being able to speak Hakka dialect is the most obvious feature of Hakka people:

It is said that Hakka dialect is an ancient mandarin. Later, it was Hakka people who brought this mandarin to the south, and it has been passed down to this day. Therefore, Hakka language family has become one of the eight dialects of the Han nationality.