沧海桑田 (cāng hǎi sāng tián) | Meaning: lit. the blue sea turned into mulberry fields (idiom) | Chinese Idiom with Pinyin & Origin

daily renewal, monthly change (idiom) · every day sees new developments · rapid progress日新月异rì xīn yuè yì

lit. a white cloud transforms into what looks like a gray dog (idiom) · fig. the unpredictable changeability of the world白云苍狗bái yún cāng gǒu

great changes · ups and downs · vicissitudes · abbr. of cāng hǎi sāng tián沧桑cāng sāng

The issue is in the past, and the situation has changed (idiom). · It is water under the bridge.事过境迁shì guò jìng qiān

feelings change with circumstances (idiom)情随事迁qíng suí shì qiān

sky and the earth turning upside down (idiom); fig. complete confusion · everything turned on its head翻天覆地fān tiān fù dì

lit. the blue sea turned into mulberry fields (idiom) · fig. the transformations of the world