Joke Collection Website - Cold jokes - After reading it, not every bamboo can be made into a flute. What is the revelation of setbacks to us?

After reading it, not every bamboo can be made into a flute. What is the revelation of setbacks to us?

"You don't know, all bamboo used to make flutes needs to go through winter, because bamboo grows too loose in spring and summer. As long as the temperature is cold in winter, whether it is blowing left or right, the texture can become more compact. "