The Longdu dialect is the most widespread dialect of the Zhongshan Min (Chungsan Min) language division within Southern Min Chinese. Native Speakers originated from towns of Dachong (Taichung) and Shaxi, Guangdong (Saakai) (formerly known as Longdu area) in Zhongshan (Chungsan) in the Pearl River Delta of Guangdong. Despite its close proximity, Longdu is not very closely related to the surrounding dialects in the region, which belong to the Yue group.