The inner world that Long Chen had created was a vast Cultivation World with nothing missing that could have been in a normal world.
There were mountains, seas, cities, continents, and everything else.
The Qi of this world was also purer than the real world. If there was no restriction and if the high-grade Cultivation skills were spread in this world, it was quite possible that people were going to break through to even the Heaven Realm.
However, Long Chen not only limited the cultivation potential in this world but it also gave the control to himself to give permission to others to breakthrough above the threshold.
He didn't give this to anyone, though, to make sure that no one could stand up to his family.
Only with the growth of his family was he going to raise the threshold.
