輔車相依 (fu6 geoi1 soeng1 ji1) — rely on one another as cheek and jowl; as dependent on each other as the jowls and the jawbone in Cantonese
fuˍ₆輔geoiˉ¹車soengˉ¹相jiˉ¹依简 辅车相依
Mandarin Pinyin: fu3 che1 xiang1 yi1
Meaning of 輔車相依
nounrely on one another as cheek and jowl; as dependent on each other as the jowls and the jawbone