Wang Tao's ability was the exact opposite of Jiang Shixue's. The simpler the mind, the easier it was for Wang Tao to interfere, and those brainless zombies were very easy to manipulate. However, it was ineffective against humans, unless they were literally brain dead... So, Wang Tao's ability wasn't very effective on humans but worked well on zombies. Of course, this was only true for zombies whose levels and spiritual power were inferior to his own.
Therefore, they generally didn't use this kind of control ability. Wang Tao didn't think of it at first. But looking at the situation now, it was clear that control was at play!
"Let's go check it out!"
Now that he remembered he had this ability, Wang Tao immediately activated Mental Disturbance, rounding up a few ordinary zombies to surround himself. He prepared to have these zombies clear the way as he and Jiang Shixue snuck over to see what was actually happening.