1. Empty the viscera of the fish, wash it, dry the water, cut off the head of the fish, and cut two pieces of fish along the bones.

2. Sprinkle salt on both sides of the fish fillets, put them in the refrigerator for one day, pour out the salt water, sprinkle another layer of salt, leave them for one day, and pour out the water.

3. Stir-fry pepper, clove and star anise in a pot, dry them, grind them into salt powder with a food processor, add salt and mix well.

4. Sprinkle halogen powder evenly on both sides of the marinated fish fillet, put the fish fillet on with a rope, hang it in a ventilated place to dry, and finally put it in a sealed container for preservation.