01 - Combine chicken pieces with soy sauce, rice wine, egg white, and cornstarch in a bowl. Mix thoroughly to coat and let marinate for 15 minutes at room temperature.
02 - Heat vegetable oil in a deep pan or wok to 350°F. Maintain temperature throughout frying for optimal crispiness.
03 - Dredge marinated chicken pieces in additional cornstarch, pressing firmly to ensure an even coating. Shake off excess starch before frying.
04 - Deep-fry chicken in batches, avoiding overcrowding, until golden brown and crispy, approximately 4-5 minutes per batch. 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 until fragrant, about 30 seconds, being careful not to burn.
06 - Whisk together orange juice, soy sauce, sugar, rice vinegar, hoisin sauce, and orange zest in a bowl. Pour into the wok with aromatics and bring to a gentle simmer.
07 - Stir in the cornstarch slurry and cook for 1-2 minutes, stirring constantly, until sauce reaches desired consistency. It should coat the back of a spoon.
08 - Add fried chicken to the sauce, tossing gently to coat evenly. Transfer to a serving platter and garnish with sliced green onions and toasted sesame seeds. Serve immediately.