In "Historical Records·Song Family", Wei Ziqi was originally the first son (eldest son) of Emperor Yi of the Shang Dynasty and the concubine brother of Zhou. During the reign of King Cheng of Zhou Dynasty, the Duke of Zhou was ordered to quell the rebellion in the three prisons. "He ordered Wei Zikai to succeed the Yin Dynasty, and offered sacrifices to him first. He wrote the "Weizi's Order" to applaud it, and the country was in the Song Dynasty... Wei Zikai ( Qi) died and established his younger brother Yan as Wei Zhong. "The same book "Three Generations of History" also said that Zhong Yan was "Qi's younger brother".
The records in "Shijia" can be compared with several ancient books. "Lu Shi Chun Qiu·Dang Wu" said: "There are three people with the same mother as Zhou. The eldest is Wei Zi Qi, the second is Zhong Yan, and the third is Shou De. Shou De is Zhou, and there are very few. Zhou's mother gave birth to Wei Zi Qi. Zi Qi and Zhong Yan were still concubines, and they gave birth to Zhou as a wife. Zhou's father and mother wanted to make Wei Zi Qi the crown prince. Taishi argued according to the law: "You can't take a concubine if you have a son from a wife." The son of Zhou. "Zhong Yan was the younger brother of Qi, which is consistent with "Historical Records".
"Book of Rites·Tan ??Gong" records that Lu Guozi Fu Bozi said, "Weizi gave up his grandson to establish Yan Ye." Zheng Xuan noted: "Wei Zi died when his legitimate son died. His younger brother Yan was also named Yin Li. "Confucius' Family Notes: Original Surname" also said that Wei Ziqi's younger brother was named Zhong Si, whose name was Yan, or his name was Xie. He succeeded Wei Zi, so he was named Wei Zhong. Zi Qi's son died first and was succeeded by his younger brother Yan, which coincided with the final brotherhood of Yin Li's brother.
The theory of "Hanshu·Ancient and modern people" is a little different. "Song Weizhong (Zhong)" is annotated as "Qizi". This theory has been discussed by a few scholars, such as Su Che and Su Zhe of the Song Dynasty. It was adopted by Bao Ergeng in the Ming Dynasty, and Yan Ruochu in the early Qing Dynasty also argued that Zhong Yan was the second son of Wei Zi Qi, but "Ren Biao" is only a solitary evidence, and it may be difficult to believe it.