One is the moon in the water, and the other is the flower in the mirror. One lives in the era of information explosion (modern times), and the other lives in the chaotic times of famous celebrities thousands of years ago (ancient times). There is no entanglement at all, but the deepest entanglement. Shui Yue and Zhong Jing both died young and frustrated in the Taihe era. In the end, they exchanged identities and supported each other to start a glorious life in an era that did not belong to them.
The heroines Shui Yue and Zhong Jing exchange identities and are reborn.