short answer: buy my book! Comprehensive dish tips.
longer answer: stick to the specials menu (in fact...ALWAYS order off the specials menu in Manhattan Chinatown!). The large menu is a minefield of mediocrity. Don't miss: salt/pepper squid, shrimp with mayo and honey walnuts, chopped pork with salted fish, and the hot pots (baby beef bones, thailand clams, scallops, etc) on the specials menu.