The ID card is a person's identification, and the relevant departments will only ask the parties to show their ID cards when they need to bear the responsibilities according to law. It is illegal to register a company with your mother's ID card in order to avoid tax. The benefits obtained by this company from tax avoidance are obtained by them. Once the tax authorities find out the illegal behavior of this company, they must first investigate the responsibility of the corporate legal person. This corporate legal person is your mother. Even if your mother has evidence to prove that she doesn't know, she will be jointly and severally liable. Unless she can prove that her identity card was stolen. But at that time, once the legal responsibility is investigated, the other party will have sufficient evidence to prove that this ID card is not stolen. Then your mother's whole body is full of mouths, and you can't tell this clearly. I suggest you make things clear to each other now. And it's best to leave audio-visual evidence, so as to get rid of your guilt in the event of an accident in the future. However, that can't be pushed clean, because the ID card is only for your own use, and lending the ID card itself is illegal.