Jing is what makes something alive. Every living creature has jing, and unliving things, such as rocks or sticks or the bread on your table do not.
Most animates, such as golems and skeletons and zombies are thought not to possess jing at all, but use other magical energies in place of jing.
On the other hand, there are those who attest that certain inanimate objects still possess jing, and even shen. “Living rock” is a phrase that brings this to mind.