Such a method that violated the heavenly principles and goes against nature’s course was something that can only be done by Jiang Chen who was once the greatest saint in the world. Only a miraculous skill like the Great Soul Derivation skill could raise a person’s soul level in such a short amount of time.
However, the cost of doing something like this was huge. A human’s soul was the absolute weakest part of the human body, but it was also the most important part of a human. The soul was the source of everything, and once it was wounded, it would be very difficult to heal.
Jiang Chen circulated the Great Soul Derivation skill and raised his soul power to match that of a Heavenly Core warrior temporarily, damaging his soul in the process. The pressure of doing this made him lose all his energy, which was why he fainted immediately after Lee Shan Yue left.