In her early years of wandering the world, Hong Li had once come across a secret technique.
This technique was known as the Demon Seed.
Using one's state of mind as the guide, it gathered the evil thoughts in one's heart, turning them into a demon seed.
The demon seed did not know it was a demon seed and would grow stronger by instinct.
When it matured, it could be swallowed and consumed.
At that time, it could strengthen one's spirit soul while simultaneously removing distractions from the mind, solidifying one's Dao Heart.
Such a beneficial technique naturally came with risks.
The key aspect of the Demon Seed technique was the swallowing and digestion process.
If one did not pay attention to controlling the strength of the demon seed, they might end up being backfired upon.
Moreover, during digestion, one would be subjected to the mental blast of the demon seed, and if unable to resist, would lose themselves.