鼎铛玉石

dǐng chēng yù shí

lit. to use a sacred tripod as cooking pot and jade as ordinary stone (idiom); fig. a waste of precious material

casting pearls before swine

鼎

dǐng

ancient cooking cauldron with two looped handles and three or four legs

铛

chēng

frying pan

玉

yù

jade

石

shí

abbr. for Shijiazhuang 石家莊|石家庄[Shi2 jia1 zhuang1], the capital of Hebei