He won the mahjong game with an amazing four kongs.

He got a Big Four Winds in Mahjong.

This box is perfectly square in shape.

This square box is very simple and beautiful.

He often uses four-kanji idioms.

Koushirou is my best friend.

Père David's deer, also known as the 'four unlike', is a species of deer native to China and is listed as an endangered species.

My new car is a four-wheel drive.

There is a proverb that says, 'Plan your day in the morning and your year on New Year's Day,' which means that you should plan your day in the morning and your year on New Year's Day.

He drew a hendecagon shape.