I hate my dad?

Your experience is sympathetic. Your parents divorced when you were young, and you awarded it to your father, but he treated you badly.

After the second marriage, I gave birth to a daughter, and three people went to live in a new house, leaving you to live with your grandparents.

Dad, like this, you'd better stay away.

You should work hard and give your grandparents a warm and comfortable life.

The more children grow up in poverty, the more ambitious they are, and the more filial they are to the elderly. I hope you can realize your dream!