[The hesitation is a surprise, and it gets Jiang Cheng to twist and look back. He's a bit surprised by Wei Wuxian's surprise, but then he looks angry by the questions. It's as if... It's as if Wei Wuxian just doesn't care?]

"When" did you leave? "When did you leave"?! Are you an idiot, or are you just playing games with me?! Wei Wuxian!!

[Anger blooms over his face. He pounces Wei Wuxian without any warning, tangling his fist into Wei Wuxian's closes and hauling one arm back to try to sock Wei Wuxian one good time in the face.]

Did you just forget so easily?! You left us because you chose those fucking Wens over us! After the things they were trying to do to everyone! Walking your awful path was almost better than you standing up for them like it was any of your business!