"It''s OK."


    Liu Yang carefully understood the message that the item column passed to him, and said in his heart.


    Normal knife skill stones are disposable consumables.


    After use, the knife skill mark contained in it will be absorbed by the user.


    So it loses its function and collapses spontaneously.


    However, after Liu Yang put the knife skill stone into the item column, because of the recovery characteristics of the item column, even after the knife skill stone collapses, it can be restored.


    In other words, Liu Yang can use the knife skill stone infinitely to speed up his cultivation of knife skills.


    However, this kind of disposable consumables is somewhat different from xuantiebao class A.


    "I use the knife skill stone once, except