In a skillet or a wok (on a medium heat) add oil, garlic, ginger, spring onion (white part), green chillies, celery and onions, sauté them for a minute.
Add bell peppers, carrots, cabbage and continue to sauté them on high flame for a minute. Make sure you do not overcook the veggies, let them be crunchy.
Add boiled noodles and stir them gently with all the veggies.
Mix in the sauce, salt and pepper and give the noodles a quick stir.
Add a tsp or two of sugar if you want enhanced sweet taste.
Adjust salt, pepper and sriracha as per your taste.
Garnish with spring onion greens, serve warm.