What should I say if dad cheated?

Don't publish anything, children don't say adults, because you can't solve this problem. If you are an adult and have a small family of your own, you should communicate with your father, express your objection, and persuade him to correct it immediately to maintain the unity and harmony of the family, but don't make any comments on computers or other coal bodies. Second, if you don't want to talk about it, don't talk about your family, and make a general statement without naming names.