The children were playing by beating the pellet drum.

He practices the dantian breathing method every day.

During the war, there was a strategy to scatter airborne leaflets, called 'Denden', over the enemy country.

He used to work as a herald in the past.

This radio operates on dry cells.

He sent a message using a telegraph key.

He is studying the ancient Tang language.

She loves reading fairy tales.

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A unique number is assigned to the new project.