Rare surnames are distributed in Yanshi, Henan Province, and there are two sources:
First, "Tongzhi 28.4 takes the name as the surname" records: "Member: Yin Yun, one is the singer, the surname is Shi, and then Wu Chu." Member Wu is Wu Zixu. Because the secret surname comes from the Yellow Emperor, and the official surname comes from the secret surname, in the final analysis, it is the descendant of the Yellow Emperor.
Second, from the surname Liu. In the Southern Song Dynasty, Liu Ning went to the Northern Wei Dynasty and admired Wu Yuan's loyalty, so he changed his surname to Liu Yuan. (See Origin of Yan's Surname). The surname of this member is also like the descendants of the Yellow Emperor, because Liu's surname mainly comes from the descendants of the Yellow Emperor.
Textual research based on Surname Dictionary, Surname Explanation, Where Does Your Surname Come from, Ancient and Modern Surname Dictionary, Calligraphy Dictionary and China Calligraphy Dictionary;
Qi and Yuan are the same word, written in different ways, and a word has multiple sounds. Read yùn when you say your surname, but don't read yù an, from Wuqing, Wu Zixu. Surnames in the whole country are written in customary ways, and Microsoft can enter them by typing yp. Members are widely distributed in 8 155 surnames in China. All provinces, municipalities, autonomous regions, Hongkong and Taiwan Province.
Yu family originated from Yu family. Out of Nanyang, with Chu Jianzhong, after Zhuan Xu. -Excerpt from "Surname Garden"
In the Southern Song Dynasty, Liu Ningzhi admired Qi's loyalty and changed his surname. -Looking at the History of the South from the Examination of Surnames
The Qi family took the name of their ancestors as their surname, which originated from the Wu family. Descendants of Wu Qi (later Guo Xiang of Wu State) in the Spring and Autumn Period. -Excerpt from Textual Research on Surnames