Baiyi attracted attention on his way home, primarily because of the two bags of confectionaries in his hands and the big black boulder hovering above him, which followed him wherever he went.
When Baiyi returned to the Aegis mansion, the fairies he sent ahead of him had already gone; they probably had already used his private teleportation portal to go to the micro realm. When Baiyi began to construct his academy, he had a cul-de-sac set up as a temporary construction site, where he stockpiled some of the construction materials needed, for easy transportation. Hence, his private teleportation portal, which was connected to that micro realm, was set there as well.
When Baiyi entered the gates of the Aegis mansion, he was not welcomed by his students; it was a panting Jawflower that rushed to meet him. Baiyi smiled, ruffled it and said, "You were being good and not biting anyone while I was gone, right?"