The cultivation of the mind was different from mental power, spiritual Qi, soul power, and even the power of thinking. It was a unique power. This kind of power could not be seen in normal times, but at some critical moments, it could play a vital role.
Cultivators also placed a lot of emphasis on the cultivation of the heart. However, ordinary cultivators didn't know how to cultivate the heart. Most cultivators would choose to go into closed-door cultivation when they were cultivating the heart. Moreover, they would go into a deadly closed-door cultivation. In a dark environment, they would use their own heart to resist the despair, loneliness, and other emotions. This was a kind of cultivation of the heart.
