1. Clean up the live carp; chop it into sections for convenience
2. Prepare green onion and ginger aniseed; heat the oil in a frying pan
3. Add the fish pieces and fry on high heat; fry until the surface of the fish skin is golden
4. Cook proper amount of vinegar (to remove fishy); add sugar and soy sauce
5. Change to a larger pot, add the auxiliary ingredients, green onion, ginger, etc., and add water. (It would be better if you use broth instead of water); add fish maw
6. Cut the northern tofu into pieces; put the tofu in the pot and simmer for about 20-30 minutes, depending on the size of the fish
