曾經滄海難為水，除卻巫山不是雲 [－经沧－难为－－－却－－－－云]

Jyutping cang4 ging1 cong1 hoi2 naan4 wai4 seoi2 , ceoi4 koek3 mou4 saan1 bat1 si6 wan4
Pinyin céng jīng cāng hǎi nán wéi shuǐ , chú què wū shān bù shì yún

Definitions (CC-CEDICT)
  1. there are no rivers to one who has crossed the ocean, and no clouds to one who has passed Mount Wu (idiom)
  2. one who has seen the world doesn't stop at small things