En. I thought it may have been an array of some kind, but I can't seem to find any rhyme or reason as to where the anchors for it might have been... while it isn't uncommon to find an array that might weaken or trap someone's spiritual powers, it's strange to imagine one that simply doesn't exist.

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So in other words, I'm not really sure what it is, either. [ very helpful, xie lian. ]