Quick Transmigration: The Sweet, Alluring Beauty Binds a Childbearing System

[Quick transmigration, childbearing, no fixed CP, palace intrigue, punishing scoundrels, all worlds] Ning Zhi is chosen by the System because of her unusually fertile constitution. She was once a little lotus spirit who cultivated for five hundred years, as well as an apprentice fairy serving the Goddess of Childbirth in the mortal realm. After enduring five hundred years of tribulations, she should have ascended to become a full-fledged immortal and served at the Goddess of Childbirth's side. But an accident during her tribulation cost her life. Just as her soul was about to vanish, she unexpectedly bound herself to the Childbearing System! She spent her life devoted to cultivation, wanting only to become immortal. She didn't even know what men were good for. Now they expect her to have children? No way! System: “Complete childbearing missions in different worlds, and you'll be reborn as an immortal.” Ning Zhi's eyes light up: “I'll do it!” World 1: A decisive king who struggles to have heirs × a concubine-born daughter of a marquis's family Nie Yuan has been ruthless and decisive all his life. He never imagined he would struggle so much to have an heir. Just as he's about to hand over the empire he fought so hard to build, his favored consort gives birth to several babies at once. World 2: A foolish crown prince who struggles to have heirs × a princess from a fallen kingdom How can a helpless young woman avenge the destruction of her country and family? Climb into the emperor's bed, bear him a son, and take the throne for her own country! (The crown prince is only pretending to be foolish.) World 3: A murderous general who struggles to have heirs × a mute farm girl The murderous general, violent by nature and away at war year after year, is consumed by worries over his lack of heirs. Then he meets his beloved wife, and has two children in three years, leaving him grinning from ear to ear. World 4: ... [A multi-world story, including ancient times, the modern era, the demon realm, the underworld, and more...]