If there were two worlds with perfect rules, one world might appear in the interstellar and the other in the beginning of the Ming Dynasty. If they fused, the advancement of the interstellar world would easily wipe out the humans in the beginning of the Ming Dynasty. This was not fair to the other world at all. The fusion of a world that had not completely evolved could avoid this problem. After the two worlds fused, they would develop into a brand new world.
"Then we'll be friends from now on."
Su Xiaolu asked Mantis Shrimp seriously.
She could feel that she would walk a long way with the Mantis Shrimp.
"Ooh…"