行云流水 xíng yún liú shuǐ

DEFINITIONS

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

CHARACTERS

行 xíng go; walk; move, travel; circulate
云 yún say, speak; clouds
流 liú flow, circulate, drift; class
水 shuǐ water, liquid, lotion, juice