I think your behavior is rude.

I think his behavior is completely rude.

We will attend a friend's wedding next week.

Zhouli is an important document that describes the ancient Chinese rituals in detail.

He bought a new formalwear for the wedding.

He is a person who respects etiquette.

Reijiro is my best friend.

Yesterday, a gun salute was fired at the Imperial Palace to celebrate the birthday of the royal family.

I visited Tanjōji and was moved by its historical value.

His first birthday was a very special day.