Han Sen was very eager to keep reading it. He continued reading what was in the back of the notebook. He wanted to learn more and find out what the black-crystal stone was.
Bai Mo had mentioned that the black-crystal stone could open the tunnel between two worlds. Qin Xiu might have made use of the black-crystal stone to enter the geno universe.
"If things were like that, then that is a fair explanation. If Qin Wan'er was born in another world, the Wan'er in this world would have been impossible for him to revive. It would have been useless no matter what Qin Xiu attempted. That is unless he accessed another world and found a Qin Wan'er that was born there and brought her back." Han Sen had figured out why Qin Xiu went to the geno universe.
Although life worked in a cycle, a person never really died. On the other hand, reincarnation did not mean the same person was alive beyond the veil.