Joke Collection Website - Joke collection - What does it mean to sleep in the wind and rain and travel day and night?

What does it mean to sleep in the wind and rain and travel day and night?

I've heard this name far and near, and it's very famous.

Sleeping in the wind. Describe the hardships of traveling or field work.

Drive hard day and night.

Describe the journey, busy and tired.

It means that there is no end to learning, and we should keep making progress.