Another thing to watch with chinese meals/food is that because they tend to have an high fat content this can slow the carb adsorbtion too quick..
It takes a bit of trail and error I must admit, but to avoid going hypo before the carbs really kick in, is to split your injection into 2 injecting some before your meal to keep even, then either after eating or a little after injecting the rest of the bolus.. I used to do this when I injected before I had my pump, with the pump I have the luxuary of programing my bolus to do it for me...
It can take several attempts to find the best dose before eating, and best timing after you've eaten, I have a list of the verious chinese takeaways that I use, each one I have my bolus split and total amounts needed..
Happy eating