蛍雪の功

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Japanese[edit]

Kanji in this term
Grade: S Grade: 2 Grade: 4

Etymology[edit]

From Middle Chinese 囊螢映雪

Noun[edit]

蛍雪の功 (hiragana けいせつのこう, romaji keisetsu no kō)

  1. fruit of painstaking study

References[edit]