The cultivation stages of the technique called "Ebb Tide" were quite simple: beginner, minor mastery, and major mastery.
This reminded Li Yan of the delicate-featured girl's earlier aura-concealment technique. Though he had only skimmed the jade slip, a flicker of admiration had already crossed his eyes.
Once cultivated to the beginner stage, this technique could block divine sense probes from those one or two minor realms above the practitioner. Its actual effectiveness depended on the strength of the enemy's divine sense.
At minor mastery, it could conceal the practitioner from those three minor realms higher. Once it reached major mastery, it could almost evade detection across an entire major realm.
That was what startled Li Yan most. His Gui Water True Scripture already possessed the ability to conceal his cultivation, and it was the strongest concealment method he had seen among cultivators.
Yet even now, with his cultivation at the late Golden Core Realm, deceiving someone an entire major realm above him was still very difficult.
"At major mastery, this technique can actually deceive someone an entire major realm higher. I wonder whether that's true. If it really can, killing that woman outright just now was careless."
Li Yan had quickly seen through the delicate-featured girl's true cultivation earlier. She was nearing the peak of the early Golden Core Realm, so he had paid her little heed. He had not even considered a Soul Search before killing her outright.
"I was still too careless. If she hadn't recorded this technique on a jade slip, I probably would have missed out on something excellent!"
Li Yan felt some regret at the thought, but he was not truly an immortal who could divine everything by counting on his fingers. Once his killing intent had risen, he had felt she was of no