业精于勤 yèjīngyúqín excellence through diligence Origin Definitions Defs Strokes Stroke Words Sentences Sents 业 業 yè noun studies (bound form) school studies; course of study; learning精于 精於 jīngyú to be proficient in to be skillful or adept at something; to be an expert in a particular field勤 qín adjective diligent diligent; industrious; hardworking; doing one's best without being lazy