Go up to the sky and down to the ground. Metaphor plays an important role in maintaining a certain situation. It also describes a huge body. The origin of the idiom: Volume 9 of Complete Works of Zhu: "The sage just wants to support this truth and teach him to support heaven and earth."

Example of idiom: if you taste the dragon, you will change, and you will have shit.

The pronoun of supporting the sky and the ground: the column supports the sky and stands on the ground. Describe aboveboard, tall and heroic. I said, you are an indomitable spirit. How did you leave your ancestors behind?

Idiom grammar: as predicate and attribute; Finger height