A round angle is 360 degrees.

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

We celebrated our 10th wedding anniversary.

How long is the perimeter of this rectangle?

The mood of this restaurant is very calm, and you can relax.

The mood of this restaurant is very calming, and you can relax.

Please remember this old proverb, 'A noble man compares and does not compete, a petty man competes and does not compare.'

If you don't get regular dental check-ups, you may develop periodontitis.

If you don't have regular dental check-ups, you may develop periodontitis.

We visited the moated burial mound and learned about the lives of ancient people.