Dad always complains about the negative aspects of society, saying that this is what Chinese people are like, how can I refute it?

Is your purpose just to refute?

This is a long process. If there is a head-to-head confrontation, he will only listen to you if your combat power (that is, your income and total assets) is twice his.

You can use a roundabout method. The first step is to complain about the dark side of society before he complains. You should already know what he is complaining about. Say it before him and talk to him slowly. Have the same language (if he refutes you and says something positive, it means he just likes to confront you). In the second step, you complain more than him, and then temporarily do some unqualified little things, such as spitting and so on. Finally, in the third step, a third person (someone close to your father) comes on the scene and says, "Look at how your always complaining affects your children. You are not as sensible as you used to be, and you have no manners at all now. And they are becoming less and less qualified, how can they survive in society?” If your dad really has no intention of immigrating, he will probably change his mind.