Yusuf Zuck was led by Walker Berger to take a tour around the Imperial Academy and then entered the legendary Seed System; this place within the Imperial Academy was an independent space, a miniature cosmos where the flow of time was a hundred times faster than the outside world, and the concentration of Divine Spiritual Energy was a thousand times richer.
In this miniature cosmos, one hundred years of cultivation would only amount to a single year passing outside, thus only the most exceptionally talented members of the Berger family could enter the Seed System.
Of course, not only members of the Berger family were in the Seed System but also individuals from allied clans, such as the Brown Family, Escober Family, Petty Family, Meskill Family, etc. These people were loyal vassals of the Bergers, hence the exceptionally talented among their clans could also come here to train.
Additionally, personally mentored disciples of some influential figures could enter as well.