What does it mean to sit and watch the sky?

"Looking at the sky in the well" means sitting in the well and looking at the sky, which is a metaphor for small vision and little knowledge; This idiom can be used as a predicate and attribute in a sentence and is generally used as spoken language. From Tang Hanyu's "The Original Road": "Sit in the well and watch the sky, saying that the sky is not small."

Idiom moral:

The frog in the well thinks that the sky he sees is all the sky. He doesn't believe that there is such a vast ocean in the world. Frogs have never walked out of that well, just as some people have never walked out of their original living environment and have narrow doubts about the world they have never seen. Nature is great and infinite, in contrast, the individual is so small. There are so many things in nature that we don't know. Only by observing nature deeply can people increase their knowledge and turn the unknown into the known. People should break through the shackles that bind them and bravely go outside. Only by trying to contact the new world that I have never seen before can I enrich my life and sublimate my personality.