Ah yes the Chinese hordes. I remember these gentlemen fondly.
The only things I have to add are:
Your tanks are infantry support only and cannot kill beyond about 1 hex. Their HE is pretty good though. Use AT teams, ATG and close assault against opposing armour.
Light armour and cavalry can be used for flanking and going deep to clean up the Chinese artillery park and if you are very lucky, take out the Chinese commander. Beware of ATGs when using armour anything available to the Chines will kill you. AAMGs can give cavalry a nasty surprise as well.
Especially when you are receiving an advance or defending, try to define a couple of defensive lines. Let the hordes move to you, hit them hard, and when the pressure gets too much, pull back to the next line and repeat. Don't worry too much about killing the enemy, break as many as you can to overload their inadequate command structure. Once they are battered, you can move in for the kill.
Ammo wagons or trucks are very useful as you will find that even some of your infantry may be left with only grenades and a couple of rifle shots.
You will find my Japan campaign notes in the AAR thread - they'll give you an idea of what not to do.
