Rinse the tofu noodles under running water and drain well.
Cut the onion, carrot, chives, and bean sprouts into bite-sized pieces.
Heat cooking oil in a pan and sauté the garlic.
Add onion and carrot and stir-fry.
Add tofu noodles and bean sprouts, and stir-fry quickly.
Add sauce (oyster sauce, soy sauce, sweet chili sauce, etc.) and mix well.
Add the chives and stir-fry once more.