Too soon are pigs, cattle and sheep, which can be used by the emperor to sacrifice to the ancestral temple. And the Ten Prison Sacrifice is the most solemn ceremony I have ever heard.
Juvenile prisons are pigs and sheep, the specifications are too low, and ordinary literati or ordinary people can do it. I remember when I was a child, when I saw my uncle's family offering sacrifices to ancestors, I used a pig and a sheep as offerings (but only the head, hoof, tail and some meat were used instead)
If the specification is higher, it is estimated that only one person will die. Dayu and the late Fang Fengjia sacrificed to heaven and earth, and Guo Guojun sacrificed to the god of Surabaya, which was rarely used by later generations. As Dr. Song advised, "Sacrifice is supposed to pray for the people, and the people are the masters that God wants to protect. If God kills people to pray for happiness, how can he enjoy it? "
So no one uses humans to sacrifice to the gods anymore.