蛍けい雪せつの功こう

noun

fruit of diligent study

A literary set phrase referring to the achievements gained through painstaking study, often evoking the classical image of studying by the light of fireflies and snow. Used in formal or written contexts.

• 彼かれの成せい功こうはまさに蛍けい雪せつの功こうだ。

  His success is truly the fruit of diligent study.

• 蛍けい雪せつの功こうを積つんで、彼かれは難なん関かん試し験けんに合ごう格かくした。

  Having accumulated the fruits of diligent study, he passed the difficult exam.