When Cao Zhen initially collected the treasures from Old Man Wu Shuang, he didn't particularly inspect them. However, during the collection, he also felt a few rather special items among them, the most special being this seemingly inconspicuous bead.
The bead was rounded and semi-transparent. Through it, one could see a jumbled mass inside like impurities.
Back then, he felt a unique power emanating from this bead, a force he only felt a hint of in Old Man Wu Shuang's attack.
Before that moment, he had never experienced such power.
Cao Zhen picked up the bead again, and a trickle of mana flowed from within his body into the bead. Immediately, that special aura was transmitted to him.
The aura was extremely faint, but he could feel that the palm strike Old Man Wu Shuang used to attack him contained this very weak force.
This power was very, very strange—it seemed ancient beyond measure, older than any other force or treasure he had ever encountered.