It's not strange for Ancient Martial Arts cultivation techniques to have drawbacks; some can rapidly increase one's martial skills, but they can harm the body and, in severe cases, even affect the mind. This is different from deviating in practice due to external disturbances or attempting to progress too quickly out of impatience, which ultimately leads to madness.
However, a faulty cultivation technique means the technique itself is flawed, leading to certain problems once a person practices it. Lin Tian didn't have time to ponder this because Ning Luoxi's fist was already attacking towards his face.
It's true that Ning Luoxi is formidable, but Lin Tian isn't outmatched by her; his only concern is that he might injure her if he uses too much force, and then how would he explain that to Fang Ming, her precious daughter? If she were an enemy, it would be easy to justify crippling her or even killing her—anything would be better than the current situation.
Bang, bang, bang...
