Half a month passed quickly!
Within the Thunder King Main Hall, even Yun Xiao did not expect that this time of refining would take such a long time. However, at this moment, he had no mind to think about the issue of time because he had already reached an extremely critical juncture.
After half a month of refining, the Thunder King's Heart, which was originally the size of a human head, was now only a thumb-sized mass, while the rest of the energy was gradually absorbed by Yun Xiao, becoming nourishment for his power enhancement.
It's worth mentioning that at this moment, not only was Yun Xiao's Meridian Qi cultivation at the cusp of breaking through the Qi Seeking Realm Late Stage, but even his physical strength had been elevated to another level due to the tempering of this Thunder Heart.
