C328 His Technique Shocked the Four of Them

It was used for experimentation. The copper man was placed in a large box. There were a few things that looked like arms inside, with a needle at the top.

According to Jin Jisi's introduction, the instrument could shoot out six needles at the same time. And they could be stabbed at the same time according to the designated acupuncture points. It could also be stabbed out in a sequence