Dad taught him a joke about learning skills.

1. When I was in college, my father said to me, son, I only want two things when you go to college. First, I am lazy and don't want to go out, so don't let your teacher invite parents. Second, I am still young and don't want to be a grandfather. 2. My mother tried to beat me again because I didn't do well in the exam. I retorted, "If you think beating me can improve your study, why do you need a teacher?" Can't you learn from dad? He gives oral education every time. "

Dad also advised his mother: "Yes, he hasn't changed every time you hit him. Is it my turn to hit him this time? "