啃雞肋

Simplified: 啃鸡肋

kěnjīlèi ㄎㄣˇ ㄐㄧ ㄌㄟˋ

    • to do something of little worth that one still can't drop

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Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
gnaw chicken ribs
Meaning
To do something of little worth that you still can't drop, like chicken ribs that have little meat but are a pity to throw away. Mildly rueful.

Sources