Literary history is like a mirror reflecting the changes in human thoughts and emotions.

Studying the transition of this area is very interesting.

This town has greatly changed over the past 50 years.

His emotion was clearly shown on his face.

His thinking is always deep.

He likes to think deeply.

Humans can make mistakes.

This world where people live is beautiful, and sometimes harsh.

This old document details the lifestyle of humans.

He has a deep interest in literature.