Because she had been exposed from a young age to the Taoist books left behind by her irresponsible father, Wu Qing'e's thoughts and values had long diverged from those of ordinary people, even becoming somewhat extreme, selfish, and sinister.
It was not that Taoist books and scriptures were evil texts that corrupted people, but the Taoist books Wu Qing'e had read were not orthodox Taoist works at all.
Though they were called Taoist books, they were really more like delusional stories someone had made up under the guise of Taoism.
As Wu Qing'e had been far too young at the time, without a complete and independent worldview—indeed, with her values still utterly immature—being rashly exposed to such things had easily led her astray.
Like becoming addicted to something, especially something encountered for the first time, many people found it hard to refuse. Wu Qing'e had thus become addicted to the things described in those Taoist books.
She yearned to become one of the immortals recorded in the books, often losing herself in fantasies she could not escape. She was possessed by an almost demonic obsession with the Taoist arts described within.
When she had truly come into contact with techniques that were largely no different from the Taoist arts in those books, she had become like an addict, unable to control her state of mind.
However... she also understood that such a state was wrong. Fortunately, because of the Sword Heart Formula, whenever she became deeply immersed in it, she would hurriedly recite the formula to calm herself down.
And the Sword Heart Formula truly possessed a powerful effect in tempering the mind. As long as she kept reciting it, even if she was on the verge of qi deviation... she could gradually pull herself back to normal.
Even so,