“顶天立地”本来的意思是头顶着天，脚站在地上。

The original meaning of "顶天立地" is standing with the head touching the sky and feet on the ground.

现在人们常用它来形容一个人很勇敢、很有骨气，是真正的男子汉。

Nowadays, people often use it to describe someone who is very brave, has strong character, and is a real man.