It was decided that Aegon and Liliana would spend the next few days in the treasury to decipher the journal. It wouldn't be an issue normally, as Mages could use their Mana to sustain themselves for a long time.
But they were inside a domain which made them mundane. They needed everything a normal human would need for camping for days. There were a few more things that needed to be taken care of before they actually immersed themselves in the job.
So, Aegon decided to go out to complete those tasks and also bring the necessary supplies there while Liliana worked on checking the journal for any dangerous elements.
Aegon was concerned for her safety, but she reassured him, saying that she had prepared many methods to deal with such situations. Only then did Aegon feel that he could leave her alone with that dangerous thing.
