The indigenous people of Yudu, before the Tang and Song dynasties were Yuyue, Shandu, Muke and other ethnic groups, after the Tang and Song dynasties, they were Sheren and Yao people, and the Central Plains people who had migrated to Yudu and the whole of Gannan in successive generations, integrated with each other, and gradually formed a unique Hakka ethnic system. Gan Bao's "Book of Searching for God", Zu Chongzhi's "Shuyi Record", Cao Shuya's "Luling Foreign Object Chronicle", "Taiping Huanyu Record" and other historical books have different records of Shandu and Muke.
The "Nan kang record" written by Deng Deming, a famous scholar in Gannan during the Liu Song Dynasty of the Southern and Northern Dynasties, wrote: "There is a jade platform on the Zero Dujun Mountain (now fifty miles north of the Dupan Ancient Mountain), and the square is wide and numerous, and the Zhou Hui is full of white stone pillars and natural stone covers, such as the shape of the house. There are many pines on all sides, overlooking Ega, towards the Hall of The Feather Man. After the wind and rain, the prosperity is clear, and there is a sound of trumpeting on the mountain, and the mountain is a festival of dance and singing. At the end of the Tang Dynasty, wooden guests tasted folk drinking, and wrote a poem for a cloud: "The wine is exhausted, the pot is my hair, the city is bustling, and the mountains are bright and bright." According to the records of relevant data, Shandu Muke is widely distributed in Fujian, Jiangxi, Guangdong, Anhui, Zhejiang, Hunan, Guangxi and Sichuan provinces, especially in the border areas of Fujian, Guangdong and Gansu. Its life characteristics are: living in the deep mountains and dense forests, there are trees and rooms, less contact with others, that is, the so-called invisible. His physical characteristics, some recorded tall, some said short, dark skin. Can work, can make wood; There are languages and marriage and funeral customs; He uses musical instruments, sings and dances, and loves to eat shrimp and crabs.
According to the research results of experts and scholars such as Jiang Bingzhao and Wan Younan, the Gan giants (that is, Shandu) and the Muke are the same ethnic group, initially called "Wuyang", the Qin and Han Dynasties called "Ganju", the Wei and Jin Southern and Northern Dynasties called "Shandu", and the Tang and Song Dynasties called "Muke". As a descendant of the Yuyue and Guyue ethnic groups, Shandu Muke died out on its own after the Tang and Song dynasties, or merged into the She, Yao, Miao and other ethnic groups, or was directly assimilated by the Han people, forming a Hakka ethnic group together with the Hakka ancestors who migrated south in successive generations. Obviously, Shandu, Muke and the people who have lived in the capital since the Tang and Song dynasties are truly "old Hakka", where the Hakka originated. They account for more than 70% of the population of Yudu.
At the end of the Ming Dynasty and the beginning of the Qing Dynasty, the Hakka people who migrated back to the capital from eastern Guangdong, northern Guangdong and western Fujian were customarily called "new Hakka" by scholars, mainly distributed in Shaxin, Kuantian, Huanglin in the east of the capital, and Yinkeng, Ge'ao and Qiaotou in the north of the capital. But even in the above townships, not all of them are new Hakka. It is often the old Hakka and the new Hakka who live in a mixed way, live together, and reproduce together.
The phenomenon of old Hakka and new Hakka coexisting and developing together in the same countryside is also extremely common in other parts of Gannan Province. For example, in the northwest of Chongyi County, the southwest and east of Shangyou County, the north of Xingguo County, the east and southwest of Ruijin City, the southeast of Huichang County, and the southwest of Xinfeng County, the new Hakka population accounts for about one-third of the total population. In Ningdu County, which is adjacent to Yudu, the new Hakka families are concentrated in the lower three townships (that is, Anfu Township, Renyi Township, and Pingyang Township in the Qing Dynasty), while the old Hakka families are concentrated in the Upper Three Townships (Taishui Township, Huaide Township, Taiping Township).
Although the old Hakka and the new Hakka have obvious differences in history, folklore, language, etc., after nearly four hundred years of integration, the differences are getting smaller and smaller, and the commonalities are more and more, and they coexist with each other and seek differences, forming a very stable and harmonious social situation. (Hakka Brother)