Cut the onion, pork, zucchini, and carrot into bite-sized pieces.
Boil the pasta noodles and set aside.
Heat cooking oil in a pan and stir-fry the pork.
Add the onion, zucchini, and carrot, and sauté together.
Add the chunjang (black bean paste) and stir-fry with the other ingredients.
Season with water, sugar, and soy sauce.
Mix the cooked pasta noodles thoroughly with the sauce.
Plate and serve.