In New Calendar Year 680, the Miracle Continent was destroyed. Part of Ye Xi's consciousness was summoned through the Gate of the Heart into Nuan Nuan's spirit world.
For Ye Xi, this was a novel experience. Before, she had witnessed everything Nuan Nuan went through on the Miracle Continent as an onlooker. She never imagined that one day she would be able to save the continent alongside Nuan Nuan.
I haven't figured out how to write this yet. If I'm just going to follow the game exactly, I might as well go play it instead.