Bring a large pot of water to a boil. Once it's boiling, add the dried Chinese egg noodles and cook according to the package directions until they are al dente. This usually takes about 1 minute.

Drain the noodles from hot water and rinse them with cold water to stop the cooking process. This helps to achieve the desired texture for your chow mein.

In a large wok or skillet, heat oil over medium-high heat. Once hot, add the boiled and drained noodles. Gently pan-fry them until they become nicely golden brown and crispy.

Pour in the soy sauce mixture, including light soy sauce, dark soy sauce, oyster sauce, sugar, water, Shaoxing wine, and sesame oil. (optional). Use a pair of tongs to gently stir fry the noodles with the savory sauce together, ensuring that the sauce coats all the ingredients evenly, about 2-3 minutes.

Lastly, add the fresh mung bean sprouts and green onion pieces. Stir-fry for an additional 1 minute until the vegetables are tender-crisp. Salt and pepper to taste.

Transfer your delicious Cantonese-style Chow Mein to a plate. Serve hot and enjoy!