If one cultivated this spell in depth, his control over his body would continuously decrease.
Lin Ran even suspected that after cultivating to the extreme, the almost materialized spiritual power would break through the restraints of the body and turn the cultivator into a pure spiritual life form.
In Lin Ran's opinion, there was a problem with his research direction. Next, he decided to continue modifying this mental attack technique and perfect the flaws.
After checking the contents of Immortality of the Mind sent by Lin Ran, Feng Qi decisively rejected Lin Ran's suggestion for subsequent modifications.
What he wanted was for Lin Ran to have an ultimate mental attack technique. Only an ultimate mental attack technique could defeat the old and scheming owner of the fog.