Combine prawns with salt, red chili powder, turmeric powder, corn flour, and egg in a bowl. Mix well to coat the prawns evenly.

Heat refined cooking oil in a skillet over medium-high heat.

Fry the marinated prawns in the hot oil until golden brown and crispy on all sides. This should take about 10 minutes.

Remove the fried prawns and set aside.

In a non-stick pan, heat oil (for stir fry) over medium heat.

Add slit green chilies, chopped onion, and chopped bell pepper to the pan. Stir-fry until the onions are translucent and the bell pepper is slightly softened.

Add chopped cilantro, celery, or curry leaves to the pan and stir-fry briefly.

Pour in soy sauce, chili sauce, and tomato sauce. Stir well to combine the sauces with the vegetables.

Add the fried prawns to the pan and stir-fry to coat them evenly with the sauce and vegetables.

Serve hot as a side dish.