Soak noodles in cool water for 30 minutes, then drain well
Heat some oil in a wok (or large skillet)
Add shredded chicken or chopped tofu, stirring regularly
Cook for 3-5 minutes until brown
Add shrimp and cook for 2-3 minutes
Remove from wok
Set aside
Wipe down wok and use again to cook onions and garlic until limp (with oil) then add carrots, green beans and cabbage last
Return the chicken or tofu and shrimp
Toss and stir until crisp
Add noodles and broth at ½ cup increments
Pour in soy sauce
Toss and stir, adding more liquid as needed until noodles expand and soften
Season with salt and white (or black) pepper to taste
Garnish with green onions and serve with lime wedges