He Zun and Li Yan were under the influence of Gu Yu’s trick even before they summoned their minions. Everything they saw after that was an illusion.
Drawing two people into his vision at the same time was Gu Yu’s current limit. Essentially, joy, anger, sorrow, pleasure, sadness, fear or shock all worked the same way. If one had to make comparison, though, fear would doubtlessly be the most powerful emotion.
During Gu Yu’s daily practice on small animals, since he meant no harm, the emotions he imposed on them were either happiness or joy. For instance, he would create illusions for them such as encountering a pretty female or running into a pile of delicious worms. Today was the first time he ever used fear to induce the vision, which turned out to be very effective.
It was a pity that he could only create a vision for a rather short period due to his limited strength. Otherwise, they might not be able to come out alive.
