Not ideal. Maybe it's the absolutely miserable conditions or the fact that he only half-believes in whatever future Xichen is describing or the knowledge that his worst fear came to pass/would come to pass and Huaisang was/is/would be left alone, but he doesn't really feel it.

"You and he were there, then, when it happened? Did I hurt anyone?" The question comes out detached. Then with a spark of the anger he'd expected but didn't quite feel, he swears sharply and adds, "I wanted him to have more time before he became sect leader."