
Not immunity, just MAD
"I can realize in advance that someone might shoot me, but I can't just decide to be immune to bullets."
Well, no.
Not Immunity.
But suppose that you had senses that could detect a bullet being fired at you. Then suppose that when such an attack has been detected, you could pull out an automatic weapon with a REALLY huge magazine and return the favour to the shooter a hundred times over. How many would-be shooters are going to risk taking a pot shot at you?
Despite having a shiny new toy to play with, this is the situation China finds itself in.