01 - Combine chicken and shrimp with soy sauce, cornstarch, and white pepper. Let stand for 10 minutes to absorb flavors.
02 - Bring large pot of water to rolling boil. Blanch fresh noodles 1-2 minutes until al dente. Drain thoroughly and set aside.
03 - Heat 1 tablespoon oil in large nonstick skillet or wok over medium-high heat. Spread noodles in even layer. Cook undisturbed 3-4 minutes until golden and crisp. Flip carefully and repeat 3-4 minutes on second side. Transfer to serving platter.
04 - Add remaining oil to wok. Stir-fry marinated chicken 1-2 minutes until nearly cooked through. Add shrimp and cook until pink and opaque, about 1 minute. Add sliced char siu and toss to combine.
05 - Add carrot, bell pepper, and snow peas. Stir-fry 2-3 minutes until vegetables are crisp-tender. Add bean sprouts and spring onions, toss for 1 minute.
06 - Whisk together light soy sauce, oyster sauce, Shaoxing wine, sugar, sesame oil, and chicken stock. Pour into wok and bring to gentle simmer.
07 - Stir in cornstarch slurry gradually. Cook 1-2 minutes, stirring constantly, until sauce coats back of spoon and reaches desired consistency.
08 - Pour stir-fried protein and vegetable mixture with sauce over crispy noodles. Serve immediately while noodles retain crunch.