The reason Molang Scholar only sent invitation letters to scholars of the Evolver level,
is that the essence of space and time he speaks of is very difficult for founders below the level of a scholar to comprehend.
Even listening for a while longer can create cognitive barriers and affect their own understanding of space and time.
Without reaching a certain height, forcibly knowing information of that height often has the opposite effect.
Great Scholar Tai'e planned to give the invitation to Lin Yuan because through their interactions over time,
he confirmed that Lin Yuan's aptitude and comprehension were extremely formidable. It would be more beneficial than harmful if he could have the opportunity to listen to Molang Scholar's lecture.
That was the reason for their conversation just now.
Anyhow, Great Scholar Tai'e himself wasn't particularly interested in Molang Scholar's lecture since he had heard it many times before, and missing it once was no big deal.