Ye Feng then said, "I got this picture by chance in the dust free palace, but I didn't expect to seal a powerful spirit with thunder attribute. I just can't make it into an artifact with the power of thunder demon. I've heard that the refining spirit of the sword infatuated with the master has crossed the world of immortality. Please help me!"

the swordsman shook his head and said, "it's the most difficult thing for a magic weapon to be integrated into an artifact. The higher the level of artifact, the higher the chance of failure. But it's even rare to make an artifact from a spirit with thunder...