The reborn beauty is pregnant again and again

[Quick Time Travel + Stunning Female Protagonist + Childbirth System + Sweet Pet + Micro Palace Fight] Jiang Nanqiu has bound the childbirth system to give birth to an heir for the male protagonist in a different world who has difficulty in having children. World 1: Stunning village girl VS middle-aged emperor who has no children. He was thirty-five years old, but had no heirs. He could only reluctantly give up the country he had worked hard to build to others, but he did not expect that his beloved concubine would become pregnant and give birth to heirs to the throne... World 2: Charming Concubine VS Tyrant and Cold Emperor World [-]: Real and Fake Daughter VS Mighty General without Heir World [-]: Enchanting Palace Maid VS Playboy Emperor... (Story [-] and Story [-] have been completed! All worlds are not necessarily written in order!).. .