"..." Wei Wuyin remained silent, including Liu Suyin. The entire world might go crazy if they knew that Wei Wuyin wasn't under any oath at the moment! But Wei Wuyin realized what she meant by having an official position! All those of relevance must swear oaths to serve the Endless Voyage Realm, the World Between the Fold, and thus the greatest benefits were strictly reserved for them.
If Wei Wuyin wasn't a Mortal Sovereign Alchemist brought into the academy by Cao Cuifen as the entire academy was busy with the clash, it was unlikely he'd be allowed in without swearing tens of oaths. If Liu Suyin wasn't with him when arriving at the City of Guardians, if Liu Yinlan didn't have her own intentions and needed time, if Liu Suyin hadn't forgotten…he didn't want to know how many oaths would've nestled themselves in his soul by now.