See the whole storyOrigin of my surname

The surname Sun originated from the state of Wei, ruled by the Ji clan during the Spring and Autumn Period. This is the most important branch of the Sun surname during the pre-Qin period. A descendant of the royal family of Wei, surnamed Ji, was named Ji Huisun. His grandson, Ji Wuzhong, changed his surname to Sun in memory of his grandfather, Huisun. Ji Wuzhong is the progenitor of this branch of the Sun surname. The Ji-surname Sun clan are descendants of King Wen of Zhou. According to the *Yuanhe Xingzuan* (元和姓纂), "Among the descendants of Wei Kangshu, the eighth son of King Wen of Zhou, there was a man named Wu Gong He (武公和), who begat Huisun (惠孙), who begat Er (耳), who in turn begat Wu Zhong (武仲), who took the character 'Sun' (孫) from his grandfather's name as his surname, thus forming the Sun clan." Wei Kangshu, whose given name was Feng (封), was the youngest son of King Wen of Zhou, Ji Chang (姬昌). His fief was in Kang (present-day northwest of Yuzhou, Henan). Historically, he is known as Wei Kangshu. After Duke Zhou, Ji Dan, quelled the rebellion of Wu Geng, he enfeoffed Kang Shu with the territories originally ruled by the Yin dynasty, entrusting him with the supervision of the people who had once belonged to the Yin. At the same time, he granted him seven powerful clans from Yin, including the Tao, Shi, Fan, Gui, Fan, Ji, and Zhong Kui clans, establishing the State of Wei. The capital remained Chaoge (present-day Qi County, Henan), the former capital of Yin. Therefore, Kang Shu was also known as Kang Shu of Wei. After receiving his fief, Kang Shu quickly transformed the Yin capital into a vassal state (or allied state) of Zhou. Later, Kang Shu went to the Zhou capital to serve as Sikou (a Zhou dynasty official title in charge of criminal law, prisons, and investigations), entrusting the State of Wei to his son, Bo Kang. Duke Wu of Wei (852 BC – 758 BC), the eighth-generation descendant of Duke Kang of Wei, whose surname was Ji and given name was He, was the ruler of the State of Wei in the early Spring and Autumn Period, reigning from 812 BC to 758 BC. During his reign, the country was peaceful and prosperous. In the 42nd year of Duke Wu's reign (771 BC), a coalition of the Quanrong and Xifu tribes captured Haojing (present-day Chang'an, Shaanxi) and killed King You of Zhou. He allied with Marquis Wen of Jin, Duke Wu of Zheng, and Duke Xiang of Qin to help the Zhou royal family quell the rebellion, protect King You's son Yijiu, and move him to Luoyi (the area around Wangcheng Park in present-day Luoyang, Henan). They supported Yijiu and helped him establish the Eastern Zhou Dynasty. Yijiu became King Ping of Zhou. For these merits, King Ping of Zhou bestowed upon Duke Wu of Wei the title of Duke. Duke Wu of Wei, Ji He, had a son named Huisun. Huisun's son was Er, a high-ranking official (equivalent to prime minister) in the state of Wei, whose fief was Qi (present-day Puyang City, Henan Province). Er's son was named Yi, courtesy name Wuzhong. According to the Zhou Dynasty's rites, the sons of the rulers of vassal states were called Gongzi (公子), their grandsons were called Gongsun (公孫), and their great-great-grandsons (the sons of Gongsun) could not be called Gongsun; they had to use their grandfather's courtesy name as their surname. Therefore, Wuzhong took his grandfather Huisun's courtesy name as his surname, thus becoming the Sun family. The Ji surname Sun clan is also a descendant of the Yellow Emperor. The genealogy is as follows: Yellow Emperor - Xuanxiao - Jiaoji - Di Ku - Houji (the ancestor of the Zhou Dynasty) - Buku - Ju - Gong Liu - Qingjie - Huangpu - Cha Fu - Huiyu - Gong Mao - Gao Yu - Ya Yu - Gongshu Zulei - Gugong Danfu - Jili - King Wen Ji Chang - Wei Kangshu - Kangbo - Kaobo - Sibo - Tingbo - Jingbo - Zhenbo - Qinghou - Lihou - Wugong He - Gongzi Huisun - Er - Yi (the ancestor of the Sun surname).

Originating from the surname Gui. The ancient ancestor of the Gui surname Sun clan is Yu Shun, a descendant of the Yellow Emperor. The genealogy is as follows: Emperor – Changyi – Zhuanxu – Qiongchan – Jingkang – Juwang – Niu – Gusou – Yu Shun – Yu'efu – Hu Gong Man (enfeoffed) – Shen Gong Xihou – Xiang Gong Gaoyang – Xiao Gong Tu – Shen Yu Rong – You Gong Ning – Li Gong Xiao – Wu Gong Ling – Yi Gong – Ping Gong Xie – Wen Gong Yu – Huan Gong Bao – Li Gong Tuo – Gongzi Wan (who fled to Qi) – Shan Ju Meng Yi – Min Meng Zhuang – Wen Zi Xu Wu – Huan Zi Yuan Yu – Tian Shu (The "Table of the Lineage of Chancellors" in the New Book of Tang states that Tian (Chen) Shu was Sun Wu's grandfather, but Tian Shu, a descendant of Yu Shun, once attacked the State of Ju together with Sun Shu, a minister of the State of Qi, and was not the same person as Sun Shu).

Originating from the Zi surname, it comes from Bi Gan, a surname adopted to avoid persecution. Bi Gan was the uncle of King Zhou of the Shang Dynasty, holding the official position of Junior Tutor. King Zhou was licentious and tyrannical, and the country was on the verge of collapse, yet he refused to heed advice. Bi Gan risked execution, entering the palace for three consecutive days to persuade the king to repent. Enraged, King Zhou decreed that anyone who dared to offend his dignity by advising him again would be beheaded. However, Bi Gan disregarded his own life and continued to persuade the king. King Zhou flew into a rage and ordered Bi Gan's chest to be cut open and his heart removed in court. After Bi Gan was killed by King Zhou, his descendants fled and went into hiding, changing their names. Some of them changed their surname to Sun because they were descendants of royalty.