It is common knowledge among the upper circles that to break through to the Soul Transformation Realm, a cultivator has to undergo the Lightning Tribulation.
During the Lightning Tribulation, the cultivator has to survive five powerful lightning strikes, each one stronger than the previous, making it extremely hard to survive. Many died in the process.
It was because of this fear that even many Quasi–Soul Transformation Realm Cultivators who met the requirements to initiate the Lightning Tribulation did not dare to trigger it.
Because once they failed, what awaited them was instant death.
All their life's hard work to reach the Quasi-Soul Transformation Realm would vanish into nothing.
Other than the difficulty to break through, the fear of death from failing the Lightning Tribulation would stop many cultivators.
That was why Soul Transformation Realm Cultivators were very rare.
