Seeing their reaction, Li Cheng sneered in his heart. Courage was not bad. Since that was the case, he would grant them their wish.
Li Cheng then took out an Immortal-grade Soul Bomb from his backpack and threw it at the dwarves.
Instantly, a strange light purple energy enveloped the entire city. All the Grey Dwarves widened their eyes instantly. At the same time, they were put in a trance. It was as if time had stopped at this moment.
A few minutes later, the light purple light dissipated. Li Cheng narrowed his eyes slightly as he sized up the scene of the city.
All of the Grey Dwarves had already developed a certain level of resistance to mind magic during the years of war against the spirit-sucking monsters. Therefore, they were not completely wiped out at the first moment. However, this was an Immortal-grade bomb.