@Veqryn:
So, just to be clear about this:
1. China can combat move into UK owned Burma/Kwangtung before UK is at war with Japan.
No. Although it’s common in house rules to allow noncom movements during the combat phase, that’s not strictly legal. If Burma/Kwangtung isn’t controlled by an enemy (and UK/ANZAC would be at war with Japan if it was), it’s not an attack, and therefore not a combat move. You cannot move into in a friendly territory during the combat phase unless you’re passing through to attack something beyond (with a mech, tank, etc). A combat move requires combat (or the possibility of combat). China moving into Burma/Kwangtung while it is still UK owned will never result in combat, and technically is not to be done during the combat move phase, though that’s often overlooked.
@Veqryn:
2. China can noncombat move into UK owned Burma/Kwangtung before UK is at war with Japan.
Correct
@Veqryn:
3. UK may not move into any Chinese owned territory before UK is at war with Japan.
Correct. In order for the UK/ANZAC to noncombat move into a chinese territory OR overfly a chinese territory with a plane, they must first declare war on japan.