My grandfather is a famous coward. I despise him, and he is not good to my most respected grandmother. I despise him, right?

whether he is a coward or not, your grandmother can scold him. You are a grandchild, so you shouldn't be so bad to the old people. Even if you look down on him in your heart, don't satirize him to his face. Do you know that?/You know what? I'm almost 5 years old now. People I looked down upon and people I despised are now living better than me. There is karma in the world, and your master has his karma. If you laugh at others, you will also have karma, so don't do this. And when I say what goes around comes around, it's not that you do bad things. Even if you look down on someone, you may be looked down upon by others one day. This "you" is not just you, everyone is the same. I have been killed by this kind of retribution for laughing at others and disdaining others.