Why did the female protagonist travel through the ancient times and be reborn three times, and the male protagonist travel through the modern times because of this?

As for the plot where the female protagonist transmigrated to ancient times and was reborn three times, I highly recommend the novel "The Empress of Prosperous Farming Gate". It tells the story of the female protagonist wanting to change the tragedy and regret of her previous life after transmigrating and being reborn. At the same time, it matches the male protagonist's setting. The male protagonist wants to pursue the female protagonist and protect her from scumbags. As for the plot where the male protagonist transmigrated to the modern world, I recommend the novel "Tomorrow's Beauty." It described the female protagonist transmigrating to the body of the young lady in the book, while the male protagonist was his first love who fell in love at first sight after being picked up after losing his memory. The two of them unfolded a mysterious detective story under supernatural circumstances. I hope you like my recommendation. Muah ~