Yisha frowned. It was obvious that the man had given her a challenge that was harder than she initially thought.
Han Sen had already generated his geno armor, so it was too late for him to change technique now. Aside from humans, not many creatures could practice two geno arts in order to create two types of geno armor.
That was because the genes of others were stable, and accomplishing this was outside the realm of possibility. The genes of humans were unstable enough to allow this, but it was still closer to the side that did not allow the fabrication of a second geno armor.
So, Yisha did not consider trying to get Han Sen to practice another geno art and start from scratch. She didn't think it would be possible.