前仆後繼 qián pū hòu jì

DEFINITIONS

  1. one falls, the next follows (idiom); stepping into the breach to replace fallen comrades
  2. advancing wave upon wave

CHARACTERS

前 qián
HSK 1
in front, forward; preceding
仆 pū fall forward; lie prostrate, prone; servant
後 hòu behind, rear, after; descendents
繼 jì continue, maintain, carry on