If Number One really is Xu Gou, how much could this fact help me? I began to calculate in my mind.
At the current stage, the most urgent problems I need to solve are the confrontation with Impermanence and the whereabouts of Changan's soul, both of which have little to do with Xu Gou. From his hatred towards Ying Lingyun, we might be able to join forces against Ying Lingyun. However, I have little interest in seeking outside help. Moreover, compared to other pressing matters, Ying Lingyun as an enemy needs to be put on hold for now.
Since Number One does not want to expose his real identity in the Void Realm, maybe I can also use "You wouldn't want others to know your true identity either" as leverage to coerce him into doing what I desire. But how much pressure can such a threat exert on someone who's qualified as Impermanence? Wordplay is not my forte, and if not handled well, it may attract another enemy at this stage.