Reborn as the Villainous Patriarch: More Children, More Blessings from the Start

Qin Chen transmigrates to a fantasy world and cultivates for ten thousand years. Just as he is about to break through to the Emperor Realm, all his efforts come to nothing... Unexpectedly, after dying, he is reborn. He activates the Family Enhancement System... [Force the Female Emperor to bear you an SSS-rank heir, who will inherit the Immortal-Demon Undying Body.] [Marry the Demon Clan’s Dowager Empress and she will bear you an SR-rank heir. Your son will crawl out of the Tomb of Gods and Demons, destined to destroy the Heavenly Dao.] [Family advances to an Ancient Clan: Reward, the Original Scripture.] [Family advances to an Immortal Longevity Faction: Reward, the Immortal-Slaying Sword Formation.] My name is Qin Xian’er. In my previous life, I was a Female Emperor, known as Slaughter Heaven... I was planning to tread the path to becoming an emperor once more, crushing all opposition and claiming invincibility. But the family I was reborn into is strange... Hm? The old ancestor wants to take me as his disciple? Hm? The old ancestor wants to marry me?! The old ancestor is just too extraordinary!