鑽故紙堆 Save Sign in to save words Simplified: 钻故纸堆 zuāngùzhǐduī ㄗㄨㄢ ㄍㄨˋ ㄓˇ ㄉㄨㄟ to dig into piles of outdated writings (idiom) to study old books and papers Character by character 鑽(zuān)drill 故(gù)happening 紙(zhǐ)paper 堆(duī)pile up A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0