1. First, make the "ecstasy butterfly array" into a cylinder shape with small meshes. The mouth on one side of the cylinder is wide. After the fish enters the mouth, it continues to swim forward, and the net "road" becomes narrower and narrower. Finally, there is only one small exit. Once the fish swims in, it will go to the point of no return. A cylinder is like a cave with holes in it. When the fish swims through every small exit, they can't turn back, they can only swim forward. When crossing the last small exit, the fish fell into the hands of fishermen.
2. Secondly, the ecstasy butterfly town is a fixed net, which can automatically feed fish after being installed underwater. It is a fishing net suitable for shallow seas, rivers, lakes, reservoirs, ponds and ditches. Pull a fine mesh fishing net with a bamboo pole, and pull a long dragon-shaped net array on the water surface. The net has only one entrance, so fish can only enter but not exit.
Finally, once a fish swims in, no matter how big or small it is, it can be caught.