With a wide smile, Eldrian returned to the doors, fiddled with it a bit, finally figured out how to open them, and promptly entered Sofiera's office.
For security reasons, the doors were easy to close but hard to open.
Upon exiting the room, he found Sofiera waiting for him. Or rather, she immediately looked up from her notes and stared at him.
"I see that you really do need a room to experiment in," Sofiera commented, causing Eldrian to blush as he wondered if he had disturbed her own research.
"Don't worry, the room is soundproof... As long as the formation holds."
"Was it- Did I-"
"No, the spells you cast weren't nearly strong enough to disrupt the formation. Your first one did drain a considerable amount of mana. I would put it at the high rank of a Tier 5 spell, or the low rank of a Tier 6 spell."
'That is how strong Tier 5 spells can be!?' Eldrian wanted to question but kept it to himself as Sofiera continued.