Prepare Chicken: Cut chicken breast into strips and marinate with salt, cornstarch, water, and beaten egg.
Prepare Orange Sauce: Juice oranges and mix with sugar, white vinegar, salt, and oyster sauce.
Create Slurry: Mix cornstarch and water to create a slurry for thickening the sauce.
Prepare Orange Slices & Peel: Slice oranges for garnish and cut orange peel into thin strips.
Prepare Frying Batter: Mix flour, cornstarch, baking powder, water, beaten egg, and oil to create a batter.
Deep-fry Chicken: Coat chicken in batter and deep-fry until golden brown and crispy.
Stir-fry Everything Together: Cook orange peel, sauce, and cornstarch slurry in a wok, then add fried chicken and toss until coated.
Plate: Arrange chicken on a serving dish with orange slices and sesame seeds.