How did the black pit introduce herring into the nest?

When fishing herring in the black pit, it is necessary to maintain a small amount of high-frequency nesting rhythm, fill the nest with dozens of nest materials every few minutes, and increase the smell of nest materials, so that herring can quickly attract herring to nest according to the smell and noise generated by nesting.

The reason for this is the following：

1. In the case of artificial breeding, herring has formed the habit of feeding at specified ration. When food is artificially fed, snails or granular substances will make a "swish" sound when they enter the water. In the long run, herring will form conditioned stimulus. When they hear similar noises, they will know that it is time to eat and swim to the root of the noise.

2. The more individuals there are, the harsher they are about the smell of food, and they like some foods with fruit flavor. When fishing herring in the black pit, it is difficult to attract herring to the nest if the smell of nest material is not Feng Shui. If the smell of nest material is herring's favorite, countless herrings will enter the nest to compete for food, making it easier to connect the fish on the fishing rod.