Wei Wuxian described the symptoms he'd seen or heard of from the Voidtreckers thus far, in their first two days or so. He notes when he knows more, or has only a very general understanding of the effect, while indicating energy-based individuals have the hardest time. He wryly notes this is perhaps not a surprise, before glancing to Yondu, for anything more he's seen or heard that Wei Wuxian has not.