Duan Rufeng and Mi Xuan concealed the fact that he possessed the Five Elements Divine Spirits simply because they believed that the fewer people who knew, the higher their own chances of seizing them would be.
As for those who knew about his supreme divine artifact, many were destined never to be able to wrest it from him in their lifetimes. Under such circumstances, why would they bother hiding the fact that he possessed a supreme divine artifact with a weapon soul?
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Chapter 3573