Advanced techniques (Shū)

Shū (周 Enfold) is the advanced form of Ten. Shū allows a Nen-user to extend their aura to an object, allowing them to "use" that object as if it were an extension of their own body. For example, one could use Shū to extend their Ten around an object (and not just their body), which would strengthen and protect the object like the way Ren strengthens and protects the body. This is the technique that allows Hisoka to make his solitaire cards as sharp and as hard as metal knives.