回复：回复：几点建议，仅共参考。

4)这是个大问题, 儿子自卑和自尊心都太强.问他为什么被欺负,他总是说因为他是中国人.
Teach him be pround of as a Chinese, let his friend know something about China.

也不太擅长交朋友.也不知该如何帮他.做父母的肯定有问题,只是不知问题在哪如何解决.
To find the first friend as soon as he can. Try to find some friends who play 网球, 篮球 at school recess time, no matter what grade. The friend in his school will help him. We just moved to mid-east in the past 2 month, my son is almost 10.

Good luck!