C549 Middle Stage of Qi Refinement

Zhao Feng didn't know what to do, but something suddenly entered his body and stabilized the Vital Spirit.

Zhao Feng looked inside, isn't this the key that he got? What kind of thing was this, to actually be able to help him refine the Nether Worm's Vital Spirit?

However, this was not the time to be suspicious. With the help of the key