饱经沧桑 (bǎo jīng cāng sāng) | Meaning: having lived through many changes | Chinese Idiom with Pinyin & Origin

venturing from one's thatched hut for the first time (idiom) · young and inexperienced · novice · greenhorn初出茅庐chū chū máo lú

(idiom) young and inexperienced; wet behind the ears少不更事shào bù gēng shì

lit. smell of breast milk not yet dried (idiom) · fig. immature and inexperienced; still wet behind the ears乳臭未干rǔ xiù wèi gān

having lived through many changes