Over the last few decades, the Wizard Tower had changed quite a bit. Beginning from its original foundations, it had expanded greatly.
Originally, there had only been the tower itself, as well as the castle that was halfway up the hill. Afterwards, many other smaller towers were constructed to provide the instructors with experiment facilities and locations to mentor their proteges.
Only official proteges were counted as being bonded to their instructors and chosen to carry on their inheritances. Just as it had been when Lu Zhiyu had chosen a few apprentices, these chosen few had received an elite education, while the other apprentices only underwent basic training.
However, they were not raised in the carefree manner that Lu Zhiyu had adopted. Lu Zhiyu was only interested in accumlulating knowledge, and thus, had no interest in building or managing a large-scale organization like Bohr and the other wizards.