Why let him go to primary school at such a young age? It was his childhood, not when he went to school. I suggest you drop him out of school first and play more. Playing doesn't mean it's not good for him to study. In fact, playing can stimulate his imagination and create his vision and strength. Primary school does not repeat a grade, and it is definitely not good for him to repeat a grade. I really believe that parents want their children to be phoenix, but not every child is a prodigy. Really think of the children, don't let them play or study.