Yudu County is located in the south of Jiangxi Province, where Hakka dialect is spoken and Hakka culture is strong, so Duyu is a Hakka. Yudu County, located in the east of Ganzhou City, Jiangxi Province, was founded in the sixth year of the Western Han Dynasty (20 1 ago) and is known as the "mother of six counties" and "three provinces of Fujian, Guangdong and Hunan".