夏か炉ろ冬とう扇せん

noun

summer fires and winter fans; useless things

A yojijukugo describing something that is out of season and therefore useless, like a heater in summer or a fan in winter. Often used metaphorically for things that are untimely or of no practical value.

• 彼かれの提てい案あんは夏か炉ろ冬とう扇せんのようなものだ。