He was diagnosed with bipolar disorder and began treatment.

My daughter caught fifth disease last week.

The impact of the unequal treaty is still deeply rooted in our society.

Her behavior seemed mysterious.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

The rain is dripping sadly.

Mr. Byou is cleaning the hallway.