行云流水

行雲流水
xíngyúnliúshuǐ
  1. lit. moving clouds and flowing water (idiom)
  2. fig. very natural and flowing style of calligraphy, writing, etc
  3. natural and unforced

CEDICT

  1. (of calligraphy, writing, etc.) very smooth and natural; natural and unforced style
  2. very smooth and natural; natural and unforced style

Wiktionary

  1. 飘动的浮云，流动的水。形容飘洒自然，无拘无束的样子。宋．苏轼〈答谢民师书一首〉：「所示书教及诗赋杂文，观之熟矣。大略如行云流水，初无定质，但常行于所当　行，常止于不可不止。」也作「流水行云」。
  2. 比喻无足轻重的事物。《警世通言．卷二．庄子休鼓盆成大道》：「把事情荣枯得丧，看　做行云流水。」也作「流水行云」。

重編國語辭典

  1. 形容事物流转不定，易于消逝
  2. 形容文章、诗作、书法等自然流畅，不受拘束

維基詞典

Entry Composition

1 行云 xíngyún
  1. (literary) a drifting cloud
  2. a drifting cloud
2 流水 liúshuǐ
  1. running water
  2. (business) turnover