Lv Qiluo believed that the only method for Li Xuan to conquer 'Wuqu Pojun' was to refine this artifact thoroughly from inside to outside.
It was because the Artifact Spirit of 'Wuqu Pojun' was the Great Generals 'Lan Yu' and 'Fu Youde' from the start of the Jin dynasty.
Both were powerful beings in close contact with the Great Heavenly Level—if these two hadn't died so early, the Great Heavenly Level would have been within their reach.
Therefore, unless Li Xuan's cultivation also reached the heavenly level, even the middle heavenly level, he would not be able to subdue it by any means.
The method of Emperor Tai of Jin was to refine with Dragon Qi and suppress with talisman array.
The 'talisman array' was centered on the bloodline of the Yu clan.
Only the legitimate bloodline of the Imperial family of the Jin dynasty can control this artifact without being counterattacked by the Evil Spirit.