Add 1/2tsp of salt and 1/4tsp chicken powder into egg whites and beat until fluffy. Steam over high heat for 3 minutes and reserve for later use.
Finely dice pork, marinade.
Blanch walnuts in boiling eater and fry in hot oil. Crush into small pieces.
Combine seasonings. Heat oil in wok, fry green onions, then fry minced pork. Add in rest of ingredients(except walnuts) and fry. Add in seasonings and fry until well combined. Stir in walnuts and briefly fry, then serve.
Place meat in center of plate, and arrange egg whites on the sides.