yǒu​yì​zāi​huā​huā​bù​fā​wú​xīn​chā​liǔ​liǔ​chéng​yīn

plans often fail but luck can bring success

  1. effort without reward
    to plant flowers with intent but the flowers do not bloom; describes a situation where careful effort and planning fail to produce the desired outcome
  2. non-Chinese
  3. unexpected success
    unintentional actions may bring unexpected results; literally to idly poke a willow branch in the ground and have it grow into a shade tree