We did volunteer work in the area hit by a disaster.

Mr. Ariji is my best friend.

This area used to be a concession territory.

In ancient Chinese astronomy, they used the earthly branches to express time and direction.

An intercontinental ballistic missile is a weapon with a very large destructive power.

The philosophy of Mohism, one of the thoughts of ancient China, advocated universal love and fairness.

He fulfilled his responsibilities as a government official.

We must absolutely obey the orders of the emperor.

He was promoted to a high-ranking position.

In mahjong, the opponent on my right, the lower house, is a formidable enemy.