The shopkeeper's request was perfectly reasonable. Besides, the Soul-Detaining Technique had been bestowed by a divine being and had nothing to do with anyone else, so Chen Lin explained its general effects.
"A Soul-Detaining Technique that can detain souls with cultivation higher than your own, without using a talisman as a vessel?"
The shopkeeper looked surprised.
Chen Lin nodded. "It certainly can. However, if their cultivation exceeds yours by too much, its effects weaken, and the soul you detain will be incomplete."
The shopkeeper's interest soared. "In that case, this secret art is quite valuable. Ordinary Soul-Detaining Techniques only work on beings of the same level. To detain souls above your level, you need a talisman as a vessel, but refining Soul-Detaining Talismans damages the soul too severely. No one is willing to make them."
After explaining, the shopkeeper frowned again. "However, since you acquired it through body infusion, we cannot be certain whether it can be learned through ordinary cultivation. That greatly reduces its value. Might you have the ability to imbue this secret art into an Inheritance Jade Slip?"
Chen Lin smiled. "You must be joking, shopkeeper. Even I only know how it works, not why. How could I possibly make an Inheritance Jade Slip? I have explained everything without concealing anything. You can decide for yourself whether you want it!"
A transaction like this would inevitably require a spirit pact. He could not give a definitive answer; the other party would have to weigh the matter himself.
The elderly shopkeeper hesitated.
A secret art that might not be cultivable through ordinary methods was a considerable gamble. Winning would bring enormous profits, but losing would mean taking a loss.
After some consideration, he said, "How many spirit stones do you intend to sell it for, fellow Daoist? If