However, the Mind Reading Technique is not without side effects.
Just as the ability's description states, it doesn't observe thoughts but rather the soul. Whether or not there is physical contact with the target, the "content" read is inscribed, meaning the soul is stored, the only difference being the amount recorded.
The problem lies in the fact that these inscribed souls get mixed together with the user's soul, thereby negatively impacting various aspects, such as hindering the operation of the Heart Method.
This insight does not come from Rodiya's experience—she knows almost nothing about souls.
This is a judgment Chen Xuan made by combining the knowledge he learned from Liu Shuyue.
In a sense, it's somewhat like the relationship between a cultivator and a Demon Fiend: after absorbing the fiend's Spiritual Qi, the cultivator becomes stronger, but the Qi becomes more impure.
