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During the Western Han dynasty, Jia Shan penned 'Zhi Yan' (Words of Utmost Importance) to advise Emperor Wen, expounding on the importance of broad consultation and open discourse.
He believed that if the emperor welcomed diverse opinions and nurtured talented individuals, the state would become powerful, just like 'where thunderbolts strike, nothing is left unbroken; where ten thousand jun of weight presses, nothing is left uncrushed.'
Emperor Wen found his arguments very reasonable and practical, so he heeded Jia Shan's advice and promoted open discussion.

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Open the tool →雷霆万钧 (léi tíng wàn jūn) is a Chinese idiom (chengyu) meaning “Possessing tremendous and irresistible power”.
雷霆万钧 is pronounced léi tíng wàn jūn in Mandarin Chinese.
Literally, 雷霆万钧 means “Thunderbolts of ten thousand jun (units of weight)”. It is used to mean “Possessing tremendous and irresistible power”.
雷霆万钧 comes from a classical Chinese story dating back to ancient China. The full story is on this page.
霆:急雷;钧:古代重量单位,三十斤为一钧。形容威力极大,无法阻挡。