“皮之不存，毛将焉附？”语出《左转·僖公十四年》，意思为皮都没有了，毛往哪里依附呢？比喻事物失去了借以生存的基础，就不能存在。

With the skin gone, to what can the hair attach itself?——a thing cannot exist without its basis. (The Spring and Autumn Annals)