Why do some villains pretend to be good people at ordinary times, but sometimes they try their best to calculate others? Are they jealous?

Half the people in this world are villains, and villains rely on calculating other people's superiors. So some people say it's hard to be a villain. These little people are narrow-minded, narrow-minded and have nothing to do. They live by calculating others. Moreover, some villains pretend to be smiling tigers, who are charitable on the surface and full of troubles in their hearts. The most terrible thing about China is such a villain. It is everywhere, so be careful. But in fact, he is not satisfied with this kind of person.