Is the strongest skill in the world a skill that needs to be actively used? Wrong! It is a passive skill! What is a passive skill? Passive skill is an instant active skill, a killer move that no one will defend against, and the final trump card that only dead people can know! Can it be easier to understand? The method of breathing, strong, perception... Haha, that's it? Xu Xiao tear apart the galaxy with his sword, and everyone is shocked... This is also called passive skill? Well, sword mastery. Book friends group: 717018659