ㄖㄨˊㄖㄣˊrénㄧㄣˇyǐnㄕㄨㄟˇshuǐㄌㄥˇlěngㄋㄨㄢˇnuǎnˋzhī

  1. 比喻必須親身經歷才能真切體會事理讀書滋味如何如人飲水,冷暖自知自我體會領略。」

the person who drinks it knows best whether the water is hot or cold (Zen proverb)​; self-awareness comes from within, to know best by personal experience