The so-called spectrum of the imperial spirit is actually a special kind of music, most of which are music of the piano, and different from ordinary music, the spectrum of the imperial spirit exists in the form of scrolls. In Danxuan's past life, this spectrum of imperial spirits is extremely rare, so rare that the total number of imperial spirits in the whole world will not exceed five!!

In fact, the spectrum of imperial spirits is used to assist in the practice of music, its role is to greatly improve the speed of the metaphysical absorption of metaphysics, and even to help the metaphysical promotion!! uuuuuuuuuuu

But this kind of...