I'd just fry the chicken then add the veg and some soy sauce. Just before the veg is ready add some ready cooked noodles (if you can get hold of fresh then they just need to be warmed through). I've never been a fan of those ready made stir fry sauces, and if I used one now I'd probably only add about 25% of what you're supposed to.
Snoopysue
Logic merely enables one to be wrong with authority.
Having been a great fan of 'chuck in whatever I've got' type stir fries I think it makes a nice change to concentrate on just one or two flavours per dish so I think I might have simply stir fried the chicken (cut into bite sized chunks or strips) and mushrooms with some spring onions and then dressed it with soy sauce, then stir fried the vegetables with a hot and sour sauce. Serve separately with a bowl of plain boiled rice. If you had a couple of eggs and a bit of bacon knocking around you could have made a Chinese omelette with it and the asparagus tips.