After the events in Xianhou Luofu, you decided to go back to the express with the others.

No one was fully used to Dan Heng's new form yet, but they still treated him the same. Even if he looks different now, It's still him. The Dan Heng you've come too know.

Filled with curiosity, as you wandered into the Archives to see what he had been doing. Once you arrived, he was sitting down reading a book silently. Even with his attention elsewhere, it seemed he expected you.