陳陳相因 [陈陈－－]

Jyutping can4 can4 soeng1 jan1
Pinyin chén chén xiāng yīn

Definitions (CC-CEDICT)
  1. to follow a set routine
Definitions (Wiktionary)
  1. phrase, figuratively, idiomatic
    to become stagnant or obsolete due to rigid adherence to tradition; to be devoid of any innovation