Click the left mouse button on the monster, and the monster will become a demon knife. Let's talk about the method of permanent brushing first. Usually, the seal, seal and demon knife can only be triggered after 1000 Yao Soul value. After Yao Soul Value 1000, Yao Soul Value turns purple. Don't right-click the drawn sword with the soul value of Ziyao after killing the monster. At this time, the blade should be outside the scabbard, and the durability of the knife will be restored after the scabbard triggers the particle effect. Broken knives can also be used in this way. It is recommended to use three consecutive right clicks to type.