Some profound cultivation techniques involved the operation of some laws of nature.
Therefore, the more one cultivated, the more affected one would be.
It was very normal for a person's temperament to change.
For example, some deviant and crazy cultivation techniques could easily make a person fall into a crazy state.
It was normal for a person's temperament to become gloomy when cultivating this kind of cultivation technique. Even more serious, it could even change a person's perception.
More serious was that some cultivation techniques had a lot of secret terms and terminology.
Thus, some profound cultivation techniques were actually very dangerous.
Without the guidance of a Master step by step, it was extremely easy for a person to deviate.
This was also a big disadvantage of vagabond cultivators. They could only rely on themselves to explore without a guide on the path of cultivation.