Heat oil in a wok and lightly brown shallots and garlic. Put in preserved black beans and fry until fragrant.
Add chicken meat, mushrooms and prawns. Stir-fry well to combine. Add seasoning to taste and fry until gravy turns thick. Dish out and put aside.
Bring a saucepan of water to a rapid boil and cook noodles for less than a minute. Drain with a wire mesh noodle ladle and tip the noodles into a basin of cold water for 15-20 seconds. Re-scald noodles in the boiling water again for just a few seconds then drain well and place in a deep serving dish. Add in 1/2 tablespoon oil and sesame oil and toss well. Blanch the bean sprouts and place it next to the noodles.
To serve, place the noodles on a plate, add some cooked chicken meat together with some gravy and sprinkle with garnishing.