In fact, according to the research by Yang Shenmin and others, the higher the progress of gene recombination, the lower the chances of getting pregnant with an ordinary Superpower User.
According to Yang Shenmin's hypothesis, this might be related to the degree of evolution.
Once genetic reorganization reaches perfection, Superpower Users might even evolve into a completely different species.
At that time, Star God level Superpower Users might even experience reproductive isolation from ordinary gene recombination Superpower Users.
So Ding Yan, Lin Ya, and Dong Yan are actually a bit anxious.
Especially Ding Yan, she knows Liang Yuan's cultivation progress and might soon break through to the Star God realm and leave this planet, so she is naturally more anxious.
Lin Ya is also very anxious because of her age.
Before the apocalypse, she would have been considered an older single woman.
