业精于勤 yèjīngyúqín mastery through diligence Origin Definitions Defs Strokes Stroke Words Sentences Sents 1 sentence 古人云：业精于勤而荒于嬉。 gǔrén yún: yè jīng yú qín ér huāng yú xī. The ancients said: 'Excellence in work comes from diligence, while neglect comes from play.' Source: Dong Chinese Dictionary