Hakka sister is a name for young girls in Hakka dialect. Hakka is a distinctive branch of the Han nationality, and it is one of the nationalities with wide distribution and far-reaching influence in the world. Since the Yongjia Rebellion in the Western Jin Dynasty, Han residents in the Central Plains moved southward on a large scale and reached the junction of Guangdong, Jiangxi and Fujian. The local aborigines intermarried with each other, and after thousands of years of evolution, they finally formed a relatively stable Hakka clan.