The day after Zhang Yu returned to the dormitory, he still hadn't received permission to leave school, so he planned to continue his artifact refining cultivation.
Seeing Zhang Yu enter the Artifact Refining Laboratory, he first grabbed a mass of flickering bright yellow flame, inhaled it into his body, and then let it repeatedly flow and circulate through his meridians, continuously infusing mana into it, and refining it together with his mana.
Next, he directed this bright yellow flame and his own mana into a second-hand magic treasure on the lab table, forming a special restriction, gradually altering the nature of the entire magic treasure.
While Zhang Yu continued to circulate his energy, each pulse of mana seemed to evoke a faint dragon roar within the magic treasure, and even the surface of the magic treasure appeared with subtle dragon-scale-like markings, as if the entire magic treasure had come alive.