Perhaps the child's family truly wanted to thank Su Fan. They had actually given him a secret technique that had been passed down through their lineage for countless generations.
Seeing this, a warm current surged through Su Fan's heart, and he was deeply moved.
This secret technique was called the "Void Tracing Technique." It had been discovered by chance at a street stall in a marketplace by an elder of his family who had long since passed away.
In truth, this secret technique had been hidden on a fragment of a battered magic treasure. That elder had only happened to discover it many years later.
The secret technique had originally had no name. It was the family patriarch of that era who named it the "Void Tracing Technique."
Unfortunately, this secret technique placed extremely harsh demands on a cultivator's soul. Not only did it require a massive amount of Spiritual Sense to activate, it also required an unending expenditure of Spiritual Sense to maintain.
Even under such harsh conditions, the power of the "Void Tracing Technique" was indeed astonishing.
At that time, the patriarch of that family was already a Void Refining Stage cultivator. Even so, he had found casting this secret technique extremely difficult and had been completely unable to bring out its full potential.
Yet even so, when the patriarch encountered danger back then, he had resorted to casting the "Void Tracing Technique."
Several Integration Stage big shots who had been practically within arm's reach had failed to detect his whereabouts. They had not even sensed the slightest trace of his aura.
The concealment ability of the "Void Tracing Technique" could be seen from this alone.
Later, that family gradually declined, and for several thousand years, no one managed to break through to the Void Refining Stage again.