Don't hate. He never hates. Even if everyone abandons him, he doesn't hate. Because he is used to being abandoned. He is used to not hating.
Because of his love, he had to leave the Su family, and because of his love, he was forced to return to the Su family, discarded like a rag doll, but picked up again. He didn't know why he was treated like this, why he was hated, but he didn't do anything. It turns out that being loved is so painful.