His performance was perfect and without blemish.

In mathematics, a perfect number refers to a number where the sum of its divisors, excluding the number itself, equals the number.

He played a perfect fifth scale on the piano.

This fish is completely farmed, and no capture is done in the natural environment.

He is immersed in the study of panmagic squares.

His birthday party was like a wonderful feast, a Manchu Han Imperial Feast.

He is a perfectionist, so he is very strict about his work.

He is a perfectionist, and his approach to work is very strict.

He won a gold medal in shot put.

There is a custom of eating rice cakes facing the favorable direction at the New Year.