"Dan poison" might have been formidable, but it was rarely seen even in the cultivation world.
By the same reasoning, among the many poisonous pills and toxic liquids, there was also a deadly poison specifically meant to deal with Nascent Souls.
Yet Nascent Soul cultivators already possessed heaven-reaching, earth-penetrating abilities. They themselves had surpassed the constraints of certain laws, and poisons capable of killing them had become exceedingly rare—at least within the Mortal Realm.
Simply finding the raw materials needed to refine "Infant Poison" was like searching for a needle in the sea.
In the Mortal Realm, poisonous pills and liquids refined from "Dan poison" might occasionally be sold by someone, but "Infant Poison" truly existed only in legends.
Even now, the vast majority of cultivators believed that the materials needed to refine "Infant Poison" had already vanished from the Mortal Realm.
And even if one refined an "Infant Poison," which Nascent Soul cultivator was not an old fox? Ninety-nine percent of them would never casually drink or swallow something handed over by another person.
Poisoning someone was also an art of great subtlety!
Li Yan beckoned, and with a surge of spiritual power, drew that blood thread back into his hand.
"I wonder whether my guess is right. But if it isn't, why did my Nascent Soul feel such terror and fear..."
At that thought, Li Yan raised his other hand. Within a small restriction on the ground ahead, a second-order Rift-Splitting Rain Swallow suddenly exploded into a cloud of blood mist without any warning.
It did not even have time to cry out. A brown demon core flew out from amidst the blood, flesh, and shattered feathers.
The next moment, the expressionless Li Yan caught it in one hand, then directly pressed the blood thread in his other