One person: I am just a pawnshop owner

If we talk about the most mysterious force in the entire alien world, whether it is a righteous sect or a full-fledged demon, they will all mention the name of a pawnshop.
Some people say that the owner of this pawnshop is an old man who has lived for hundreds of years, and they also claim that the owner's portrait can be seen in their ancestors' picture albums.
Some people also said that the owner of this pawnshop was clearly a monster, because they saw with their own eyes that the owner was getting along well with the elves in the Northeast.
Some people also say that the owner of this pawnshop is actually an immortal, but he is just playing around in the human world and refuses to reveal his true identity.
But no matter who they are, they all admit one thing.
That is, the pawnshop owner is very powerful, so powerful that no one can control him, and so powerful that no force can interfere with him.
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Xu Si: Boss, please tell me a little bit about your identity.
Yang Fang: I've already said it, I'm just a pawnshop owner.