后浪催前浪
hòu​làng​cuī​qián​làng

the new excels the old

  1. 后 後 hòu locativenoun
    behind
    (bound form) back; rear; behind; in the direction of one's back
  2. 浪 làng noun
    wave
    wave; breaker; anything resembling the rising and falling of a wave
  3. 催 cuī verb
    to urge
    to urge; to hurry or press someone to do something; to prompt
  4. 前 qián locativenoun
    front
    (bound form) front; forward; ahead; facing direction. Use 前边 qián​bian or 前面 qián​miàn for the standalone noun.
  5. 浪 làng noun
    wave
    wave; breaker; anything resembling the rising and falling of a wave