曾经沧海 (曾經滄海) céngjīng cāng hǎi

céngjīng cāng hǎi set phrase having crossed the vast ocean; widely experienced in the vicissitudes of life
Domain: Idiom 成语
Notes: (CC-CEDICT '曾經滄海')

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曾经沧海难为水,除却巫山不是云