He made a kong in mahjong.

It's difficult to collect character tiles in mahjong.

It's difficult to collect bamboo tiles in mahjong.

The teachings of the Analects are the guidelines for my life.

Gametes play an important role in the reproduction of organisms.

She is a plain girl, but I was attracted to her inner beauty.

He is famous as a male-to-female crossdresser.

She said she is still a virgin in the old-fashioned sense.

He is a child of older parents, and because his parents are elderly, he himself felt the responsibility of adulthood from an early age.

He fractured his trochanter.