This is honestly the question he's been dreading and his fingers twist in his robes as his gaze focuses on the opposite, Xichen's eyes closing after a few moments. "It happened months ago for me, but it happens years in your future." He begins quietly, going quiet again so he can choose his words carefully.

"A-Yao was coming to play for you more and more regularly, using the song of clarity to try and keep you stable but it didn't work in the end. You..." He swallows hard. "You had an episode that you didn't come out of until it was too late, Da-ge. There was nothing we could do."