渤澥桑田

bo2 xie4 sang1 tian2

lit. blue seas where once was mulberry fields (idiom, from 史記, 史记, Record of the Grand Historian); time brings great changes, life's vicissitudes

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渤澥桑田|渤澥桑田 [bó xiè sāng tián] ► lit. blue seas where once was mulberry fields (idiom, from ↑史記|↑史记 [Shǐ jì], Record of the Grand Historian); time brings great changes ► life's vicissitudes