During this time, many people had already learned of the existence of Kamar-Taj, which had transformed into a sacred sanctuary. Every day, crowds flocked there, hoping to find the opportunity to learn Magic.
It was precisely because of these people that the Ancient One learned of the major events happening in the outside world, discovering for the first time that the special dimensional space he had found was, in fact, the Warp.
Otherwise, he would probably still be toiling away with his research, taking a very long time to figure out that this thing was actually the Warp.
Chapter 161