[Traditional fairy + mortal + no time travel + single female protagonist + no system + dual cultivation of good and evil + building a force + demonization + brains]
What is an immortal and what is a knight? Ling Fan, a young man with a shocking life experience, faced a desperate situation that was not tolerated by the good and the evil, and found his own way of a fairy that has never been seen before or since.
The emotional description is good
Is the heroine Feng'er or Snow Beauty?