2. Put a little salad oil in the pot, heat it and stir-fry the pork belly;
3. Stir-fry onion, ginger and garlic;
4. Add dried pepper, pepper, aniseed and fennel, and stir-fry over low heat;
5. Stir-fry for fragrance, and then add broth (the broth can be boiled with pork bones in water until it is milky white);
6. Add soy sauce according to personal taste;
7. Add a little pepper noodles and salt, mix well and bring to a boil;
8. Add the old tofu, gently turn over and simmer for 20 minutes.