泛指自己经历的事，自己知道甘苦。
to know best by personal experience; the person who drinks it knows best whether the water is hot or cold (Zen proverb); self-awareness comes from within
如(rú)
人(rén)
饮(yǐn)
水(shuǐ)
()
冷(lěng)
暖(nuǎn)
自(zì)
知(zhī zhì)
