Cook the noodles according to instructions and keep aside.
In a large skillet, heat oil over medium high heat. When hot, Add the onions, garlic, ginger, mix and cook until translucent. 1-2 minutes.
Add the rest of the veggies, a pinch of salt and cook until golden on some edges. 2 to 3 minutes.
Meanwhile, mix the soy sauce, vinegar, chili sauce, water in a bowl. Add this to the skillet and mix well.
Add the cooked noodles and toss well to combine. Add salt and pepper generously and mix to combine. Taste and adjust salt, heat and black pepper. Flaked black pepper works best in the noodles rather than ground.
Cover and cook for a minute. garnish with scallions/green onions and serve.