Apart from the first level that merely tested a cultivator's physique, any of the other eight levels of Ascending Heaven Tower could have easily claimed Su Chengyu's life.
Su Chengyu's risky venture into the Realm of Selflessness did indeed open up the only pathway for his survival.
In harmony with the lingering echo of the Realm of Selflessness, this journey of self-questioning was just right for mending Su Chengyu's tattered mind state.
With every level he ascended in the Ascending Heaven Tower, his mind state would heal a bit.
It may not have been evident at the moment, but this would bring unexpected benefits for Su Chengyu in his future tribulations and on his cultivation journey.
The trial of the sixth floor was also an illusion, but compared to an illusion, the trial of the sixth floor was more like a dream.
An incredibly realistic dream.
