Stir-Fried Chicken with Chinese Broccoli, Mushrooms & Oyster Sauce

I adapted this recipe from The Woks of Life and it is simply delicious! Where I digressed was in tenderizing the chicken with baking soda before cooking. If you can't find Chinese broccoli, broccolini is an excellent substitute. Great served with steamed white rice to soak up all that delicious sauce!