The one upstairs was pasted and copied by Du Niang. If Xia's surname is a pure-bred Han nationality (now it is gone), it can basically be said that he is a descendant of Dayu. Some are based on official positions, and some are Xia surnames given by the Xia Dynasty to reward those who have made meritorious deeds. When Xianbei people change their surnames in Chinese, they hardly change their surnames to Xia, because Xia is not the most popular surname in China. They changed their surnames to Yuan (Emperor), Liu, Lu, Lou, Zhou and so on, too many. There is no Xia surname. There are many ethnic minorities called Xia Hui and Manchu, and there are also Mongolians (with Manchu style)