Cook the noodles according to package instructions. Drain and set aside.
In a small mixing bowl, whisk together the soy sauce, sesame oil, vegetable oil, minced garlic, brown sugar, and black pepper until well combined.
In a wok or large skillet, cook the protein and vegetables over high heat until they are cooked through. Add the cooked noodles to the wok and stir-fry for 1-2 minutes.
Pour the sauce over the noodles and stir until the noodles are evenly coated.
Serve the longevity noodles hot, garnished with sliced scallions or cilantro if desired.
