After Binding the Birth System, I Rescued My Parents

Yun Zhiyu's parents disappeared on a plane. At this time, a system bound Yun Zhiyu, saying that as long as Yun Zhiyu gave birth to children of the lucky children in the three thousand small worlds and earned enough points, he could buy high-level time-travel props and go back to the past to rescue his parents. So Yun Zhiyu, who had been single for eighteen years, entered three thousand small worlds... Ancient times, modern times, martial arts, the beast world, the era... And finally rescued her parents! (No fixed CP)