A relative often satirizes me and my family for no reason. What should I do?

I have such relatives at home, but I don't have your troubles. Theoretically, this person is a relative. Actually, I don't think of him as my family at all. I didn't even look at him when I met him in the street. Naturally, he was unhappy, and he spread it around. Other relatives and elders came to tell me directly or indirectly. My answer is this: I treat you as one of my own, you are a relative, I treat you as a passer-by, you are run over by a car, and I watch the excitement. "