【晚节不终】〖wn jié bù zhng〗[lose one's virtue in old age; lose one's integrity in one's closing years]

晚食当肉著诗典，

节解支分汉英翻。

不亦乐乎世界语，

终南捷径大同寰。

到了晚年却不能保持节操。Reached his old years but failed to keep their own festival exercises. Has reached his old years but failed to keep their own festival exercises. 同：晚节不保。