Heat the oil in a wok or large frying pan, add the garlic and stir-fry over a medium heat until lightly browned. Add the chives, light soy sauce and oyster sauce and stir-fry for 2–3 minutes.
Add the prawns to the wok and stir-fry for 3 minutes or until cooked as you like. Spoon on to a serving plate and garnish with chilli slices.
Serve immediately with boiled Jasmine rice or cooked noodles.