Before cooking, prep all ingredients by slicing the vegetables with a mandoline and finely chopping ginger, garlic, and green chilies in a food processor.
Bring a pot of water to a boil, add the noodles, and cook them as per the package instructions.
Drain, rinse under running water, and toss with oil to prevent sticking.
Heat a wok on medium-high and add 1½ tablespoons of oil.
Once hot, sauté chopped ginger, garlic, and chilies for a minute, being careful not to burn them.
Stir in sliced onions and cook for another minute.
Add carrots, green peppers, red peppers, and cabbage, stir-frying on high heat for two minutes to maintain crunch.
Add boiled noodles along with soy sauce, white vinegar, tomato ketchup, red chili sauce, green chili sauce, sugar, white pepper, black pepper, and salt.
Toss everything using tongs until the noodles are evenly coated, cooking for about two minutes on lower heat if needed.
Garnish with spring onions.
Your vegetable chow mein is ready.