C473 Refining the Thunder King

"Weng weng weng …"

When Lu Yang threw Thunder King into the Beast Controlling System, he felt a tremendous change in his mind. Even his soul could feel that a large amount of lightning energy was exploding out from within the system, causing his entire body to tremble.

Immediately afterwards, Lu Yang felt a huge sea of lightning appearing in his mind. In the sea of lightning, Xiao Mei's body