Shadowslash already realised who the old man is since he told Mitz he would be in the library he should have forbid anyone from going inside during his stay.
Then the only person who dared to come inside is the person he asks for.
A person who was well versed in building a fortress.
Shadowslash directly asks for the man to teach him how to build a fortress.
Since it was a direct request from him the man dared not to be negligent.
While Shadowslash was listening to the lectures his clone quickly arrives in front of Reias study room but when it got insideitz wasn't there.
Since nobody is inside the clone just put the letter on top of the desk and disappears.
Shadowslash on the other hand spent the remainder of the day listening to the lectures about building a fortress.
This kept on repeating as he listened to different views of workers also Mitz quickly purchased the books that he wanted.
