The curse technique the Yin Soul Big Shot spoke of actually followed the path of a Great Dao method.
Once cultivators reached the Golden Core realm, they possessed a Leakless Body. A strand of hair or a clipping of nail was connected to the origin of their body.
As for hair loss or the like before Golden Core, that did not matter. After the Golden Core Tribulation lightning, it no longer had anything to do with the past.
Under such circumstances, if someone obtained their hair, blood essence, or similar things, they could affect their soul through secret techniques.
Of course, there were other curse techniques that affected not the soul, but blood essence, lifespan, or fortune. That was all normal. What they were discussing now was a curse technique that affected the soul.
This secret technique came from a demonic cultivator. Its most basic principle was to gradually affect the target's soul through a curse technique, until it could even slowly absorb it in the end. At its core, it emphasized one word: "slow." It stressed concealment.
The most important part was not how powerful the curse technique was, but how to keep the other party from noticing it.
At the Spirit Projection Stage, one could cast techniques barehanded. However, this technique emphasized slowness, so the best method was still to use a formation.
That Spirit Projection Stage demonic cultivator had lost to the Big Shot and passed all the methods and formations on to it. However, the Big Shot had not studied them seriously. It mainly wanted to understand the underlying principles so it could ensure that it would not fall victim to such a technique in the future.
Once the principles were understood, creating a simplified formation was fairly easy. This was especially true of the anti-detection