fǔ​chē​xiāng​yī

to depend on each other

Senses

辅车相依/ 輔車相依 fǔ​chē​xiāng​yī (also fǔ​jū​xiāng​yī) to depend on each other

as close as the jawbone and the cheek; used to describe a relationship where two parties are closely related and mutually dependent

References

synonym 辅车相依/輔車相依 唇亡齿寒/唇亡齒寒