Stir-fry the corn flour in the pan for a few minutes, don't burn it.
Honey is a good temptation to catch carp and grass carp.
Vitamin B2 is a good additive for attracting fish. Just add a little less flour, 5%.
Rice wine is the kind bought in the supermarket. Cover honey with half sweet potato and corn flour, 1-2 tablets of vitamin B2 and 1 tablet of mineral water.
Cover 2 caps at most, and rice wine is also 1-2 caps.
Sweet potato bait is ready, and the skill of hanging bait is also essential. It's best to take a knife with you and cut the sweet potato into small pieces suitable for the hook. Neither too big nor too small. When hanging bait, hang sweet potato pieces according to the direction of the hook, and completely hide the hook. In this way, the carp will safely swallow the bait in one gulp, and you will wait for the fish to take the bait.