Fry the hard boiled eggs till the whites are blistered and browned.
In another wok, heat some sunflower oil to cook the onions. They do not have to be super-cooked just slightly transluscent.
Add your prawns and stir-fry.
Add about 3 chinese spoons of sambal tumis and 1 chinese spoon of water if it gets to dry. Toss and cook everything together. Taste and see if it needs further seasoning.
Add the eggs when the prawns are cooked and toss again to coat with the sambal.
Eat garnished with chopped coriander.