Longdu dialect
Native Speakers originated from towns of Dachong and Shaxi , Guangdong ( formerly known as Longdu area ) in Zhongshan in the Pearl River Delta of Guangdong . 
<triplet> Dachong <subj> Zhongshan <obj> located in the administrative territorial entity <triplet> Shaxi, Guangdong <subj> Zhongshan <obj> located in the administrative territorial entity <triplet> Zhongshan <subj> Dachong <obj> contains administrative territorial entity <subj> Shaxi, Guangdong <obj> contains administrative territorial entity <subj> Pearl River Delta <obj> part of <subj> Guangdong <obj> located in the administrative territorial entity <triplet> Pearl River Delta <subj> Guangdong <obj> located in the administrative territorial entity <triplet> Guangdong <subj> Zhongshan <obj> contains administrative territorial entity