1.To Make Sauce: Bring Water To A Boil In A Large Saucepan; Dissolve Bouillon Cubes In Boiling Water. Remove 1 Cup Of This Broth And Mix With Cornstarch In A Small Bowl, Then Return Mixture To Saucepan And Let Thicken. Stir In Sugar, Oyster Sauce And Soy Sauce; Cover, Remove From Heat And Set Aside. 2.To Make Chicken Nuggets: In A Shallow Dish Or Bowl, Flour Cubed Chicken Well And Let Stand In Flour For 15 Minutes. In A Small Bowl, Beat Egg, Milk, Salt And Pepper Together. Remove Chicken From Flour, Dip In Egg Mixture, Roll In Flour Again And Deep Fry In A Large Skillet Or Deep Fryer Until Golden Brown. 3.Place Prepared Chicken Nuggets On A Platter; Heat Sauce Over Low Heat To Heat Through, Then Pour Over Chicken. Sprinkle Cashew Halves And Green Onion On Top And Serve.