Be careful, my iron palm has no eyes.

"Dad said be careful that my iron sand palm doesn't have eyes" means that if you don't listen, you will be beaten.

This sentence reminds me of my deskmate:

My deskmate is a naughty boy. He likes joking at ordinary times and doesn't study hard at school, so he is often invited by his parents.

I remember once, my deskmate became the last in the class again, and then he said sadly, Oh, no, maybe my dad needs an iron palm to wait on me again. It means, maybe my father hit me again. I sympathize with him very much. He is clever, but he just doesn't make progress. Maybe he just didn't form the study habit.

As expected, when he got home, his father said, "The report card failed again? Remember to work hard next time. If you don't work hard, be careful that my iron sand palm has no eyes. " .

Yes, the child's grades are not good. As a parent, you can scare, but you can't hit your child. Because this way of education has no influence on children's learning. It may even lead to rebellion. So the best way is to spare more time to study with your children, and slowly everything will get better.