Interpretation: Metaphor is superficial but not profound.
The ancients thought that dragonflies repeatedly dipped their tails in water, wasting their physical strength and not being able to drink water into their mouths, which had no practical significance. In fact, this is the misunderstanding of the ancient people on the phenomenon of skimming water, which is all wet. This is a very important content of dragonfly's life. It lays eggs in the water while watering, and the larvae grow up in the water, and finally climb out of molting and feather into real dragonflies.
Two-part allegorical saying is a special language form created by working people in China since ancient times. This is a short, interesting and vivid sentence. It generally consists of two parts, the first part is an image metaphor, like a riddle, the second part is an explanation, an explanation, like a riddle, and the middle part is-. In a certain language environment, you can understand and guess the original intention by saying the first half sentence and "resting" the second half sentence, so it is called two-part allegorical saying.