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Meaning of 头悬梁,锥刺股

Lookup via: Pinyin | Radicals
头 tóu 悬 xuán 梁 liáng , , 锥 zhuī 刺 cì 股 gǔ (Trad.: 頭懸梁,錐刺股)
lit. with his head attached to a beam and stabbing his thigh with an awl (idiom); fig. to study assiduously and tirelessly