Change the knife on both sides of the three-scaly fish, fry the fish on both sides, add a few pieces of pork belly and stir-fry until fragrant, add onion, ginger, garlic, pepper, star anise, dried Chili, bean paste, soybean sauce, cooking wine, rice vinegar, soy sauce, appropriate amount of boiling water, a little salt and white sugar, stew for 10 minutes on low fire, add tofu and stew for 10 minutes, collect juice on high fire, and add monosodium glutamate and chicken.