Yi Chengrui frowned and mumbled something. The ground was covered with a thin layer of blue crystal, which spread to the surroundings at an extremely fast speed. The others felt that the surrounding temperature had become a little cold.
The ice crystals lowered the brick's temperature and it was no longer as hot.
"Go!"
As he shouted, countless small water droplets condensed in the air and then divided into countless needles as thin as cow hair. They scattered outside the city wall and quickly pierced into the heads or limbs of those demonic beasts without them knowing it was coming.
The huge fire-breathing demonic beast was no exception. Its body suddenly came to a stop, and countless ice needles appeared on its limbs. Its skin was instantly covered in a layer of ice crystals, and its blood froze, gradually losing its mobility.