1, from the descendants of Emperor Yan. According to Yuanhe's surname, Gong Gong, the minister of the Yellow Emperor (the descendant of Emperor Yan), was a water official in the Yellow Emperor's period and was regarded as a social god for his meritorious service in water control. Later, one family began to take the word "Gong" as the family name. His descendants changed the word "Gong" to "Gong" and evolved into Gong.

2, from Ji surname, followed by Gong Bohe. In the late Western Zhou Dynasty, there was a royal nobleman named Ji He, who was appointed as an earl in Gonggong (now Huixian County, Henan Province) and called Gongbohe. At that time, Zhou Liwang was driven out of the capital because of "China riots", and the governors elected him as the son of heaven, which was called "Republican government" in history. After the end of the Republic of China in the Spring and Autumn Period, his son and grandson took the country name as their surname and called it Gong's. Later, it evolved into Gong. According to Shang You Ji, during the Spring and Autumn Period, after his son Qi acceded to the throne, posthumous title became the emperor. Because it was called Gong in ancient times, later generations took posthumous title as their surname, also known as Gong. Later, it evolved into Gong.

3, from the surname of Ji Weng. According to industry newspaper records, the descendants of King Zhao of Zhou were sealed in Weng Mountain, and later they took the city as their surname and called it "Weng". In the early Song Dynasty, there were Weng Gan in Quanzhou, Fujian Province, including Hong, Jiang, Weng, Fang, Gong and Wang. The fifth son is named Gong, and his descendants are also named Gong. This branch is one of them. Later, in order to avoid retaliation, Hong changed his surname, removed the word "Hong" and added a dragon to it, which became Gong. They are all Fujian Gong surnames.