The world can sometimes be harsh.

He built a dam to dam up the river water.

He rushed to the station in a hurry.

That person is really annoying.

The red sun rose in the sky, illuminating everything in red.

In this situation, I think it's best to follow the proverb 'discretion is the better part of valor'.

He is a superior engineer who can run the project barefoot.

His answer was correct.

The character '敘' is an alternative form of '敍'.

This stone is very solid.