Transcendents were called immortals!
The limit of Mortal Root was Immortal Reverent!
The heavenly spirit root was the limit that cultivators in the human world could reach. The immortal spirit root had already broken the limit. Under normal circumstances, it was impossible for ordinary mortals to have immortal spirit root.
Unless it was a child born from the union of two immortals, only then would it be possible to have an immortal spirit root.
However, true immortals could not descend to the mortal world, and the conditions in the human world could not produce immortal spirit roots. Therefore, immortal spirit roots became a legend.
Even when the Special Encounter System modified Zhu Wuyang, it also modified Zhu Wuyang's talent and aptitude to the extreme of the human world according to the situation in the human world.