Heat a pan with water to this add in the salt and oil, wait till the water comes to a boil.
Once the water boils add in the hakka noodles and cook till its done. Drain the excess water and then wash the noodles. Set aside. (Washing the noodles prevents it from further cooking and this way it will not be over cooked or mushy). Mean while marinate the prawn in Chilli sauce and soy sauce allow it to sit for 10 mins.
After marinating cook the prawns in oil till perfection and set aside.
Heat a kadai with oil add in the garlic and saute next add in the dry red chilli and capsicum. Saute for few secs and then add in the Red Chilli sauce, Green Chilli sauce. Mix well.
Next add the Soya Sauce, Vinegar mix everything together and then add in the cooked prawns let it cook for a min and then add in the cooked hakka noodles.
Mix everything together and sprinkle in the pepper powder and the Spring onion. Switch off the flame.