In a medium bowl, add oyster sauce, soy sauce, black and white peppers and rice wine. Mix well. Set aside.
Place cornstarch in another medium bowl. Set aside.
Cut chicken into 1/2-inch cubes.
Place chicken in corn starch. Toss until fully coated. Set aside.
Heat oil in a wok or skillet.
Deep fry chicken in hot oil in batches until golden brown.
Remove from oil and place on paper towel-covered plate to drain.
Pour out used oil and wipe out wok or skillet.
Add about 1 tablespoon of oil. Heat until hot and shimmering.
Add onions and celery. Cook for 1 - 2 minutes.
When onions are starting to get soft and fragrant, add sauce mixture. Heat until bubbling.
Add chicken, stirring to fully coat with the sauce.
Serve hot with rice or noodles.