Shen Luo nodded slightly and beckoned. The giant black ring shrank to its original size, all its demonic flames withdrawing into it, and landed in his hand.
Though unassuming in appearance, the Nine Serenities could grow or shrink at will. It was also incredibly hard, almost comparable to nine-turn refined iron. The demonic flames it emitted were no ordinary demonic fire, either, but a fusion of several kinds of demonic flame with an extraordinarily high temperature. Not only could they burn flesh and melt bones with ease, even a slightly inferior Magic Treasure would instantly turn to ash if touched by the smallest spark.
This ring was unquestionably a deadly weapon!
Shen Luo turned his hand over and put away the Nine Serenities, then picked up the final black demonic box. Once again, he used the Primordial Artifact Refinement Art to refine it, soon refining just under half of its internal restrictions.
"So this treasure is called the Plague Box..." He also learned its name from the restrictions.
He had already witnessed the Plague Box's power. It could release formless, intangible plague poison that even someone like the Blood Skull Ancestor could not detect, allowing it to strike him unawares.
Back when his cultivation was still low, Shen Luo had often used poison in battles against his enemies. He had no aversion to such methods; perhaps they might even prove unexpectedly useful at some critical moment.
As he considered this, he carefully put away the Plague Box, then divided his attention four ways and resumed refining the three demonic treasures and the Free-and-Easy Mirror.
In the blink of an eye, another day and more passed.
The Free-and-Easy Mirror hung in midair. The final ring of restriction runes surrounding it shattered, dissolving into specks of starlight. Mist immediately swirled around the