The reason Ye Mumu transmigrated is still a mystery.
Some say she was so foolish that the Creator couldn't stand it and tossed her back to ancient times to fend for herself. Others say she was an alien seed left behind on Earth, and transmigrated automatically when she reached a certain age... Still others say that perhaps... she simply fell into a latrine, and people assumed she had transmigrated when they couldn't find her.
Ye Mumu herself answered, deeply embarrassed: “It all started with a leaf... and ended in a bloody tragedy.”
It was simple. Ye Mumu was walking happily down the street when she spotted a bright green leaf lying on the ground. She got an itch to kick it, so she did... But she was so clumsy, and her cerebellum so underdeveloped, that she toppled backward. And so the bloody tragedy came to pass. When Ye Mumu woke up, she was no longer in her own era. It was a little sad, but with her nerves of steel... she clearly wasn't even fazed...
And so our story begins...
