Zhu County is a small county northeast of Beijing. If a person wants to walk from Zhu County to the capital, it will take him a day and a night; if he switches to a carriage, it will only take him half a day; if he has a horse as fast as a green cloud, he can reach the capital in less than two hours. Generally speaking, Zhu County is not far from the capital. The story begins and ends here. The heroine borrows another woman's body to pursue her dreams.