The First University's Protect Legal Formation was a nested Formation.
The campus walls, fences, and other boundaries constructed the Inner Formation, while the winding coastline of Buji Island defined the Outer Formation. In simple terms, the Inner Formation's protection was more meticulous and heavily guarded, while the Outer Formation was relatively more relaxed—which is precisely why His Grace the Duke chose to "chat" with that public-cost student when he was leaving campus.
Although Duke Milton was getting on in years, he was far from confused and would definitely not make trouble for their students under the watchful eyes of a group of Elder Wizards.
After all, it's best to enter the village quietly, without the sound of gunfire.
