After Li Yan set up the Ghost Trace formation to envelop the entire island, he began releasing hallucinogenic poison. He then had to make the cultivators within his defenses walk out on their own.
Otherwise, the formation restrictions would isolate the hallucinogenic poison, rendering it ineffective. As for the cultivators stationed on the island, Li Yan had not bothered with them at all before this.
Even if these people inhaled the hallucinogenic poison, so long as he did not actively trigger it, any hallucinations they experienced would be tied to whatever they had been thinking at the time. They would not reveal any flaws so quickly.
Li Yan had tested this conjecture as soon as he obtained the hallucinogenic poison, first on butterflies that were not Demon Beasts, then on small Demon Beasts, and finally on Snow Mosquitoes with whom he could communicate at any time.
Back then, even though Li Yan knew full well that the newly acquired poison had to be problematic, he had stubbornly failed to notice anything unusual. It was not until he later had Qianji test the poison that he discovered the truth, let alone these cultivators...
After using Five Elements spiritual power to produce strange sounds within the shrouding formation, the cultivators in the secret realm might not have become so frightened that they mistook a bow's shadow for a snake, but their reactions were not far off.
Whenever anything appeared that they could not clearly identify, they had to investigate it immediately. Thus, Li Yan effortlessly lured them out of their defenses.
Every cultivator who stepped outside was poisoned in an instant. Li Yan then actively triggered the hallucinogenic poison, immediately filling all their minds with the terrifying scene he had simulated: a swarm of Glittering Gold Blood Leeches pouring forth from their