ˊshízhīˊㄨㄟˋwúwèiㄑㄧˋqìzhīㄎㄜˇㄒㄧˊkěxí

食之无味,弃之可惜
shízhī wúwèi, qìzhī kěxīㄕˊ ㄓ ㄨˊ ㄨㄟˋ,ㄑㄧˋ ㄓ ㄎㄜˇ ㄒㄧ
  1. 起來沒有滋味覺得可惜形容東西用處捨不得拋棄 當初收集這些電影海報興致勃勃現在興致食之無味,棄之可惜當作紀念!」。

lit. to be hardly worth eating, but it would still be a pity to discard it (idiom)​, fig. some things have little to no value, yet one is still reluctant to part with them