Sixth-Year Teaching Building, Third Laboratory.
Xuan Ziwen was carefully handling the main body of a soul tool, his expression serious, while Ju Zi, Ke Ke, and Zi Mu assisted him at his side.
All four were intensely focused. Once they finished assembling the soul tool in their hands, they began the initial testing.
This was the prototype of a Class 6 soul tool machine, capable of automatically engraving the core arrays of Class 2 soul tools.
Compared with Huo Yuhao's own design, this soul tool machine had clearly been refined considerably in appearance, making it more attractive. The engraving knife was also positioned more sensibly, with a downward-facing design.
Xuan Ziwen pressed his hand against the soul tool machine and slowly fed a stream of pure soul power into it. Ju Zi and the other two involuntarily held their breath, watching with nervous anticipation.
Powered up, the soul tool machine slowly began to operate.
The sharp engraving knife slowly traced across a small metal sphere. Intricate arrays intersected, revealing a distinctive geometric beauty.
Xuan Ziwen's improved soul tool machine made little noise as it operated, producing only the faint cutting sounds of the engraving knife touching metal.
In less than ten minutes, the soul tool machine finished its engraving. Xuan Ziwen signaled to the side with his eyes, and Ju Zi eagerly removed the finished core array. After examining it for a moment, she exclaimed delightedly, "It worked, Teacher Xuan! It really is the core array of a Class 2 soul tool."
Xuan Ziwen nodded and addressed Huo Yuhao, who was sitting in a corner of the laboratory. "Yuhao, your idea was absolutely perfect. It was a tremendous success."
Hearing the praise, Huo Yuhao paused his own work and snapped his fingers at Xuan Ziwen. "Teacher Xuan, your research just