The best way is, how do you usually associate when you don't know such a thing? Go to my uncle's house to buy what he likes the first time there is a contradiction, and say that his father is wrong (this statement can only be the contradiction between you or you and your father). Say nice things about your father. Your uncle won't be so exclusive when he sees that you have bought something. Secondly, he said that your father is not satisfied with you, and he will naturally accept whatever you say.