What does it mean to be empty when you are angry?

"An inert mind is empty" means that a mind without the help of other minds and motivation is called empty. In the six-hexagram divination, the empty hexagram has no substantive meaning, but only plays the role of divination symbol. If a man has roots and vitality, that is, with the help and support of other men, then what he represents has a foothold and can exist stably. Such an idea is called a useful idea. On the contrary, if a person is rootless and lifeless, that is, without the help and support of others, then what it represents lacks substantive significance and stability. This is the so-called uselessness.