My personal opinion is that in ancient times, the surname was the family name, and the surname was its branch. Therefore, the clan name may not refer to one person, but to a small tribe of people. Suiren clan means a person who drills wood to make fire. It is likely that a small tribe first mastered the technology of drilling wood to make fire and then spread it to other clans. The title Suirenshi was left behind when later generations recorded history. It does not refer to the exact person but a group of people. As for Shennong, he may have first mastered the knowledge of using plants to treat diseases. Therefore, it is called Shennong. Have you noticed that there is no family name after Huangdi, but the name of Huangdi is recorded in history. Although there are different opinions, he does exist. Does this confirm my statement? I have never heard of Pangu's statement.