（けいせつ）・・・苦労を重ね学問に励むこと。車胤（しゃいん）は蛍の光で、孫康（そんこう）は雪明りで勉学に励んだという故事から。
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Pronounced as "keisetsu"... to study with diligence. Comes from the Chinese story of Che'yin and Sunkang, who studied hard even when they only had fireflies and snow-light for illumination.

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