Cut the pork belly slices into bite-size pieces.
Prepare the tofu, onion, zucchini, spicy chili pepper, and green onion.
Put the pork belly slices in a pot and stir-fry them.
Once the pork is cooked, add the prepared vegetables and stir-fry together.
Pour in the broth and bring to a boil.
Dissolve soybean paste and gochujang into the broth.
Add tofu and simmer over medium heat.
Add spicy chili pepper and green onion, and let it boil once more.