First, season the prawns with salt, black pepper, and Shao Xing wine. Boil the dried noodles by the packet instructions or use fresh egg noodles. Mix all the chow mein sauce in a bowl and set it aside.
Heat the large wok/pan into a medium-high heat, drizzle a tablespoon of oil. Saute the prawns for 2-3 minutes or until prawns clour changed, then remove from pan and set it aside.
In the remaining pan, drizzle 1-2 tablespoons of oil, and saute the chopped garlic for few seconds with medium heat. Then follow with the onion slices, carrot, and bell pepper slices. Stir fry for 1 minute.
Next add the noodles, pour the sauce mixture, toss well and cook for 2-3 minutes over medium-high heat.
Place the cooked prawns back in the wok, follow with spring onions, bean sprouts, and chilli slices. Toss well until all the ingredients combine evenly and cook for another 1-2 minutes.
Transfer to serving plate and serve immediately.