Cassandra had spent thousands of years in her self-created temporal acceleration space, all in an attempt to do the impossible: to self-ascend to godhood. Unfortunately for the catwoman, Alexander's words rang true.
The task was an impossible one. No matter how much time she spent contemplating or mulling over Alexander's guidance, she could not do it. Even so, she did not give up. After all, there was nothing else for her to do.
One day, her cultivation was interrupted when Alexander appeared at the centre of his universe, accompanied by the leaders of his world. She had kept her presence hidden and watched the show unfold.
Alexander had created a subspace around the centre, where he layered the foundation of the Universal Accord Commission headquarters over the subspace, creating a sort of vault for the core. To gain access to the universe's core, one had to break the subspace.