Take a kadhai or a wok and add oil.
Spread the oil throughout the wok or kadhai and let it smoke a little.
Next, add the onion and finely chopped garlic and green chilis.
Stir them until the rawness is gone and to this add 2 tbsp spring onion (keep the ½ tbsp to use later)
Keep the flame on medium and stir everything for about a minute.
Now, add the carrots, green beans, capsicum, and cabbage.
Stir everything well.
To the veggies add the vinegar, soy sauce, red chili sauce, and salt to taste.
Increase the flame to high and toss all the veggies along with the sauces. We want the veggies to soften and not soggy.
Toss and cook them for about a minute and a half and keep on stirring. Make sure not to burn them as the flame is on high.
At this point add the fried paneer or the chicken if you are using it. (Skip this step if not using).
Take a taste test and add if anything is needed.
When done, transfer them into a bowl.