The Cultural Revolution is a part of China's history.

His father was diagnosed with schizophrenia in the past.

He was diagnosed with schizophrenia.

The meristem of this plant is very active.

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.

This movie is really amazing.

It's a tradition to make gingerbread for Christmas.

The artificial satellite is orbiting around the earth.

The study of artificial life is a new frontier in science.

China is a people's republic.