In a small bowl, mix together soy sauce, dark soy sauce, oyster sauce, fish sauce, sugar, and white pepper. Set aside.
Heat vegetable oil in a large wok or skillet over high heat.
Add minced garlic and sliced shallots. Stir-fry for 1-2 minutes until fragrant.
Add the chicken slices and stir-fry until they are cooked through.
Add the prawns and cook until they turn pink and are cooked through.
Push the cooked meat and aromatics to one side of the wok. Crack the eggs into the empty space and scramble them until cooked through.
Add the soaked and drained rice noodles to the wok. Stir-fry everything together, mixing well.
Pour the prepared sauce over the noodles. Stir well to ensure the noodles are evenly coated with the sauce.
Add the bean sprouts, chopped chives, and sliced red chili (if using). Stir-fry for an additional 2-3 minutes until the vegetables are slightly wilted but still crunchy.
Remove from heat and serve hot.
Enjoy your meal!