Sweet and Sour Pineapple Pork, also known as Fènglísū ròusī, is a delicious and easy Chinese dish that combines the flavors of tender pork, tangy pineapple, and a sweet and sour sauce. The dish is made by stir-frying marinated pork with fresh pineapple chunks, bell peppers, and onions, and then tossing them in a flavorful sauce made with vinegar, ketchup, soy sauce, and sugar. The result is a mouthwatering combination of savory, sweet, and tangy flavors that is sure to satisfy your taste buds. Serve this dish over steamed rice for a complete and satisfying meal.