金刚钻儿穿透钢板，过硬金剛鑽兒穿透鋼板，過硬金剛鑽兒穿透鋼板，過硬

a diamond drill piercing a steel plate: hard enough to get through

Saying俗语俗語

Two-part saying歇后语歇後語 · Rarely used now

Meaning: Said of skill or quality that stands up to strict tests. Approving.
Wordplay: 过硬 (guòyìng) literally means hard enough to get through the steel, and figuratively means solid enough to pass tough testing.

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Simplified: 金刚钻儿穿透钢板，过硬
Traditional (Taiwan): 金剛鑽兒穿透鋼板，過硬
Pinyin: jīngāngzuàn ér chuāntòu gāngbǎn, guòyìng
Bopomofo: ㄐㄧㄣㄍㄤㄗㄨㄢˋ ㄦˊ ㄔㄨㄢㄊㄡˋ ㄍㄤㄅㄢˇ，ㄍㄨㄛˋ ㄧㄥˋ

Written with HSK 7-9 vocabulary, at CEFR level C1.

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