Did our Hakkas in Bobai, Guangxi, move here during the Qin Dynasty?

Hakkas are the general names of the ancient Han people who moved from the Central Plains to the south from the Three Kingdoms period to the late Ming and early Qing Dynasties. The approximate time is 220 to 1644. Because of the war in this period, people moved south to escape the war. The historical time of Qin dynasty is 22 1 year BC, so there are definitely no Hakkas in Qin dynasty. Moreover, the Hakkas slowly moved from the Central Plains to the south of Jiangxi, then to the west of Fujian, then to the north of Guangdong, and finally settled there. After settlement, the population gradually increased. Later, due to the lack of land and large population, some Hakkas migrated to the west and entered the present Guangxi and Sichuan areas. Therefore, the Hakka people in Guangxi only came later, and the history will not be too long. There is no connection between Chen and Qin.