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.

Please open this opaque sliding door and take a look at the room.

Chrysophyta perform photosynthesis underwater, supplying oxygen.

Zhenzong was a great emperor of China.

The United Kingdom of Great Britain and Northern Ireland is a country located in Europe.

He lives with the spirit of 'I alone am the honored one under heaven and on earth.'

Mr. Okuda is an insurance sales representative.

She is respected as the first lady of the country.

He felt nauseous and rushed to the toilet.

The center of this plate is sunken.