一損俱損，一榮俱榮 [－损－损－－荣－荣]

Jyutping jat1 syun2 keoi1 syun2 ， jat1 wing4 keoi1 wing4
Pinyin yī sǔn jù sǔn ， yī róng jù róng

Definitions (Wiktionary)
  1. phrase, idiomatic
    to be closely connected such that when one suffers damage, everyone suffers damage, and when one prospers, everyone prospers