Hey, long time no see.

This flower is very rare.

He is studying the ancient Chinese poison, Chin.

I, the emperor, wish for the happiness of the people.

Chin is studying about the Chen dynasty of China.

The children were playing by beating the pellet drum.

He has already finished writing the report, so we use the present perfect form.

She is learning the grammar of the present progressive form.

His wailing echoed through the night sky.

She was devastated by sadness and wailed.