Boil noodles in salted water until cooked but firm. Drain and keep aside.
Heat oil in a wok and sauté chopped garlic until aromatic.
Add sliced vegetables and stir-fry on high heat for 2–3 minutes.
Add Schezwan sauce, soy sauce, salt, and black pepper. Mix well.
Add boiled noodles and toss until everything is evenly coated.
Garnish with spring onions and serve hot.