Why do birds gather in water plants? Why is the fishing net hanging on the treetops? Why are elk foraging in the yard? Why do dragons wander by the water? Compared with the abnormal phenomenon, it highlights the disappointment and confusion in the minds of the characters, which means that it is impossible and futile to ask for anything. Zeng, fishing net, a square fishing net with wooden sticks or bamboo poles as supports in ancient times.