Place the Wok on the stove on high heat. Add oil with high smoking point. Like vegetable oil or grape-seed oil.
To this add freshly minced garlic, ginger and green chillies. Saute them till they start to brown.
Next add in the onions and little bit of salt, to help onions start to cook evenly. Next goes in the spring onions.
Now either mix soy sauce, green chili sauce, red chili sauce and sugar in a bowl or add them one by one. Give it a mix.
Next goes in the all the thinly sliced veggies along with ground black white pepper and MSG. Give it a thorough mix. Let the spices cook through.
The final step is to add the cooked noodles. Mix the noodles using two spatulas, as it is easy to mix everything well this way. Adjust the salt. Give it a mix again and done.