From the yellow emperor dragon lines.According to the last record source "and" bamboo annals ", I have a dragon, the yellow emperor huangdi there are bears in the (now henan xinzheng).For the child in henan.

From when shun ran after the dragon.According to annals clan "slightly" contained, authentication, shun also, dragon also ran (a) deals with the cashier emperor life office sons called surname.Due to shun the activities of the region in be area, therefore the child from the shanxi ShengJing today.Is the child for Shanxi Province.

From the royal child after the surname examination, dragon family name from the royal child, looked at the wuling, tianshui.Such as xia dynasty royal child Liu Lei (yao, because have domesticated the power of the dragon, is summer king kong jia of xia give as royal child) seed, have for dragon's.Liu Lei city in today henan yanshi county south, is for the child in henan.

From Huan child.Annals clan slightly according to the "and" MingXian clan and class ", according to legend Dong Fu, have family name, the surname by shun farming dragon gives Huan child.Then have to dragon's, is for authentication of hubei province.

According to "qiu-hu dallying" contained, the western han dynasty when the river in a child.River county, cure today northwest guizhou Carey county.

According to the history of the north ", and "king king, how those countries (in xinjiang) as a child.