Don't underestimate the above two points. Liars basically make a fuss about this.
For example: show you the real estate license and ID card. But when I get my ID card, I'm a different person. This contract is no longer valid.
For example, if you buy a house online, the price is good and the price is low (scammers often publish houses like this). Then he said to give you the real estate license and ID card, but you have to pay a deposit. Many people have been set up like this. etc