What's Yu's surname

Yu surnamed si. Legend has it that Yu was the leader of the ancient tribal alliance in China, also known as Dayu, Rong Yu. Dayu's father Kun, one of the grandchildren of the Yellow Emperor, was accused of unfavorable water control. Dayu inherited his father's footsteps and changed the method of water control, and finally subdued the flood.

After thirteen years of water control, Dayu traveled all over Kyushu and made three trips to his home without entering. He successively opened the jiusan, dredged nine lakes and nine rivers, dredged nine rivers and demarcated the border of Kyushu, and finally completed the great cause of leveling the soil and water. Shun Di ceded his throne to Yu. After Shun's death, Yu proclaimed himself emperor, with the title of country. The descendants of Yu take Zu Shi as their surname and respect Dayu as their ancestor.