01 - Combine sliced chicken breast with soy sauce, Shaoxing wine, and cornstarch in a mixing bowl. Toss thoroughly to coat and let sit for 10 minutes to tenderize.
02 - Whisk together hoisin sauce, soy sauce, rice vinegar, sugar, sesame oil, and water in a small bowl until sugar dissolves completely. Set aside for later use.
03 - Heat 1 tablespoon vegetable oil in a large wok or skillet over high heat until smoking. Add marinated chicken pieces and stir-fry rapidly until just cooked through, approximately 3-4 minutes. Transfer chicken to a plate and reserve.
04 - Add remaining oil to the hot wok. Toss in minced garlic and grated ginger, stir-frying for 30 seconds until fragrant but not browned.
05 - Add sliced bell pepper and julienned carrot to the wok. Stir-fry vigorously for 2-3 minutes until vegetables begin to soften but retain crunch.
06 - Return cooked chicken to the wok along with scallions and bean sprouts. Stir-fry for 1 minute to heat through and combine flavors.
07 - Pour prepared sauce over the chicken and vegetables. Toss everything together to coat evenly. Continue cooking for 2 minutes until sauce bubbles and thickens slightly.
08 - Transfer to a serving platter immediately. Garnish with additional scallion pieces if desired. Serve hot alongside steamed jasmine rice or thin pancakes.