Quick Transmigration: I Win the Imperial Harem's Favor with My Childbearing System

[Peerless beauty + quick transmigration childbirth + satisfying palace intrigue + no fixed CP + ancient worlds] After Qing Ning was hit by a car, she was bound to a childbirth System. The System said that if she gave heirs to the male leads of small worlds who had no descendants, she would receive endless wealth and eternal life. Qing Ning: There’s really a deal this good? Sign me up!