shí zhī wú wèi , qì zhī bù gān
see 食之無味,棄之可惜|食之无味,弃之可惜[shi2 zhi1 wu2 wei4 , qi4 zhi1 ke3 xi1]
shí zhī wú wèi , qì zhī kě xī
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