Using a Foundation Establishment Pill required one to enter seclusion in a quiet, undisturbed place. The potent medicinal power contained within the pill would inflict immense pain as it cleansed the body's marrow. This was especially true for someone with the constitution of a Celestial Vein Master like Ling Xiao; the agony he would have to endure was beyond anything an ordinary person could ever imagine.
With a soft sigh, Ling Xiao stored the Pill Furnace back in his Space Ring. The successful refinement of the elixir had put him in a good mood. Opening the door, he saw Yisha's anxious face and asked with a smile, "Did the Beastmen break in? How could they? Aren't there plenty of Defense Army soldiers?"
