The formation of Fujian Tulou is related to several famous migrations of the Chinese and Chinese in the history. During the Yongjia period in the West Jin Dynasty, the disaster of war in the north was still frequent, and natural disasters were raging. The local people moved south, which opened the prelude to the continuous migration of the Chinese and Chinese people into the country for thousands of years. The Central Plains immigrants entering southern Fujian merged with the local residents, forming the Fulao people with the characteristics of southern Fujian dialect; the Central Plains Han people who entered the mountainous area of western Fujian through Jiangxi after the transfer formed another important folk system in Fujian, the Hakka people with the characteristics of Hakka.