After just a couple of days, Lith's body couldn't take the training regimen anymore, not with just three meals a day. He couldn't explain to them that thanks to Invigoration his body required but a second to regain his vigor, so he accessed Soluspedia to relieve his boredom.
Only then did he notice that his mental library was completely empty except for a scroll. It said: "If you can read this, eject the scroll inside the tower."
The moment Lith did as instructed, two more scrolls appeared inside Soluspedia.
The first said: "If you are alright, eject this scroll" while the second: "If they are holding you prisoner against your will, eject this scroll".
'Solus, you are a damn genius.' Lith smiled while ejecting the first scroll and continuing their long-distance conversation.
The two of them shared all of Solus's tower abilities, distance only made it harder for Lith to access his dimensional space, but he still managed to do it just by heightening his focus.