Eggs, or Chaos Eggs, nobody knows what they actually do; the landlord won't tell Li Pan. She probably doesn't know either, but basically, Chaos Technology retrieves them once a year.
After all, it's a ten-month gestation. These Celestial Beings will descend from Jupiter, not only to reclaim the Chaos Egg produced last year but also to conduct annual health checks for the dancers at the Black Clothes Tower. Treating illnesses and cosmetic surgery are just incidental; the main task is selecting suitable mothers from the pregnant women, transplanting the new batch of fertilized eggs through surgery, and transforming them into new 'eggs' until they are harvested the next year upon birth.
Yes, just like a chicken farm, these eggs initially have the opportunity to develop into normal human embryos. But with the company's special biological surgeries and drug modifications, they ultimately transform from 'humans' into those 'egg-like' forms.
