01 - Combine chicken pieces with soy sauce, rice wine, egg white, and cornstarch in a bowl. Mix thoroughly to coat evenly and let marinate for 15 minutes at room temperature.
02 - Pour vegetable oil into a deep pan or wok and heat to 350°F. Maintain temperature throughout frying for optimal crispiness.
03 - Remove chicken from marinade and dredge each piece thoroughly in additional cornstarch, shaking off excess to ensure even coating.
04 - Deep-fry chicken in small batches to avoid overcrowding. Cook for 4-5 minutes per batch until golden brown and crispy. Transfer to paper towels to drain excess oil.
05 - Remove all but 1 tablespoon of oil from the wok. Add minced garlic, ginger, and sliced chili. Sauté over medium heat until fragrant, approximately 30 seconds.
06 - Whisk together orange juice, soy sauce, sugar, rice vinegar, hoisin sauce, and orange zest in a bowl. Pour mixture into the wok with aromatics and bring to a gentle simmer.
07 - Stir cornstarch slurry into the simmering sauce. Continue cooking for 1-2 minutes while stirring constantly until sauce thickens to a glossy consistency.
08 - Add fried chicken pieces to the sauce. Toss gently but thoroughly to coat each piece evenly. Transfer to serving platter and garnish with sliced green onions and toasted sesame seeds. Serve immediately.