Place the chicken pieces in a large bowl and set them aside.

In a medium bowl, mix together the egg, salt, pepper, and 1 tablespoon of oil. Stir well and set it aside.

In another medium bowl, combine 1/2 cup of cornstarch and flour.

Heat oil in a wok or deep-fryer to 375 degrees for deep-frying.

Dip the chicken pieces into the egg mixture, then into the flour mixture, shaking off any excess.

Now, let's prepare the sauce:
In a small bowl, mix together the soy sauce, orange juice, brown sugar, and orange zest. Set it aside.

Clean the wok and heat it over high heat for 15 seconds.
Add 1 tablespoon of oil, gingerroot, garlic, crushed red chili pepper flakes, and green onions.

Stir-fry for a few seconds until it becomes fragrant.

Next, add the rice wine and the soy sauce mixture that was set aside earlier.

Add the cooked chicken and stir until everything is well mixed.