Boil noodles in salted water until cooked but slightly firm. Drain and rinse with cold water.
Heat oil in a wok and sauté chopped garlic until fragrant.
Add sliced vegetables and stir-fry on high heat to maintain crunchiness.
Add boiled noodles, soy sauce, chili sauce, vinegar, salt, and pepper.
Toss everything together until the noodles are well mixed with sauces.
Garnish with spring onions and serve hot.