The Sword Cocoons Sword Silk Array Formation had 64 permutations, and Zhong Yue had only learned the first 27. If he wanted to learn the complete Sword Cocoons Sword Silk Array Formation, he would have to be personally taught it by Shui Zian himself.
Even if it were only 27 Sword Cocoons, it was already appallingly strong; refining the Sword Cocoons for some time, he was now quite familiar with them and was eager to see their unleashed power.
The Sword Cocoons was the only malefic weapons that had a low requirement for the user's cultivation base. This set of malefic armaments value the user's intelligence and their control of the Yuan Shen over the depth of their cultivation base.