Once I was told by my chinese friend about the main ingredients for making chinese dish you should have. First is of course Soy sauce. If you were in Indonesia, choose the Salty Soy Sauce, as we have another kind of Soy Sauce: Sweet Soy Sauce. The second one is Sesame Oil. This oil have a specific taste and aroma that will make the dish special.

Ingredients:
2 Bok Choy, clean and remove it's stalks
125 grams cleaned prawns (or squids, cut into small pieces)
1/2 Onion, finely minced
2 garlics, minced
1 cm ginger, crushed
2 tbsp Oyster Sauce
1 tbsp corn flour
salt
1/2 tsp black pepper, powdered
200 ml water
1 tsp sesame oil

In a pan, bring to boil some water and a pinch of salt. Add Bok Choy and cook for 1 minute. Remove from pan and drain it. Put the cooked Bok Choy in a plate, set aside.

In a frying pan, heat a little oil. Add minced garlic, Onion and ginger. Stir fry them until the aroma comes. Add prawns and fry until they slightly pink in color.

In a bowl, mix together: Oyster sauce, corn flour, salt, black pepper, sesame oil and water. Pour the mixture to the frying pan. Bring to boil and cook until the gravy thicken. remove from pan and pour the sauce over the cooked Bok Choy. Serve hot.