There is a hole under Zhu Zhu's bed. This hole is a magical passage connecting modern times and other worlds.
By chance, Zhu Zhu fell into the cave and met Chen Yuanshou, the prince of the Yuan Kingdom.
Including the palace, rivers and lakes, as well as modern time and space.
The heroine is not defiant, not awesome, has no golden fingers, and has no room for supernatural powers.
CP is uncertain, maybe there is no CP at all