I would say

"He is my kid, PLEASE let me take care/educate him. You have done excellent job to bring me up. Now it's my turn...".

Your son is only 9yrs old boy, he needs the time to learn, and the space to grow in his way (as long as it's not a bad way), but
not in his grand-parents or his parents way.  I learned from someone who said: don't make a big deal for small things, but do
make a huge deal on important things, so the kid will take our words seriously....0.02 cents though

 

所有跟帖： 

• 这个概念上可以这么说，但实际做到很难。教养基本都在小地方和细节上体现的，不提醒不引导，孩子很少有悟性全把握 -keessa- ♀ (0 bytes) () 07/15/2013 postreply 09:12:29

• yes, kids still need to be reminded -4peace- ♀ (60 bytes) () 07/15/2013 postreply 09:34:44

• 那不是又回到说多说少怎么说的问题。 -keessa- ♀ (0 bytes) () 07/15/2013 postreply 09:40:05

• 说得很好！lz在“尊老”的文化熏陶下，做父母都做得不理直气壮，孩子更可怜，从小头上就 -小睿儿- ♀ (30 bytes) () 07/15/2013 postreply 09:17:57