The group named Si in the Xia tribe migrated east as Dayu dredging river ii and Luo, then settled down in the Ji and Luo area after Dayu ascending the throne.

• 有夏（女以）姓集团正是伴随大禹疏浚济、漯而东进，并于大禹登基为王以后立国于济、漯流域的；