It's from The Collection and Interpretation of Zhuangzi, which means: Don't talk about ice with insects in summer, they don't understand; Don't talk to the frog in the well about the sea, it hasn't seen and doesn't understand; Don't talk to ordinary people about profound knowledge of Tao, he doesn't understand.

Original text:

The Collection and Interpretation of Zhuangzi, Volume 6, Waipian Qiushui, Beihai Ruo said: Well frogs can't talk about the sea, but they are confined to emptiness; Summer insects can't talk to the ice, but also to the time; Qushi can't talk to Taoists, but be tied to teaching.

Translation:

Bohai Shenruo said: "You can't talk about the sea with a frog in a well because its vision is limited by its narrow residence; Insects who live and die in summer can't talk about ice and snow with it because its vision is restricted by the season; People who have little knowledge should not talk with him about the truth, because his vision is bound by his education.

Related Enlightenment

You can't talk about ice with insects that grow in summer. Metaphor time limits people's knowledge. It also means that people are short-sighted and don't understand the truth. In fact, most people who can understand this sentence are wise men.

When a four-season insect talks in Kan Kan, it is difficult for summer insects to understand the scenery outside summer, just like Copernicus or Galileo found new scientific discoveries, but it is difficult for people around them to understand them, so the blind mocked them. Auricularia auricula can never tell the difference between bass and treble. If summer insects can live for one more season, they may be able to go one step further, see the good and evil outside the circle and know more.