The two flames collided, exploding with a boom into sparks that filled the sky. Then, a sight that left the soldiers on both sides dumbfounded appeared: the towering inferno visibly began to shrink!
"Is this man an immortal?" Many Jin Dynasty soldiers cried out in alarm. Even Pusuan Zhongyi was somewhat shocked. Using fire to extinguish fire was far beyond everyone's understanding. The Southern Song soldiers, meanwhile, began worshipping Guo Jing as a god, and their morale, which had fallen to rock bottom, instantly soared.
Song Qingshu smiled faintly. Guo Jing's approach happened to coincide with what he had just been thinking. He had been worrying about how to remind him, only to find that Guo Jing had already thought of the method himself.
Using fire to fight fire looked profound, but to someone from a later age who stood on the shoulders of countless giants, it was no secret. Once a fire started, the air heated up and rose high into the sky, causing the pressure at the heart of the blaze to become very low. The pressure outside the fire zone was comparatively high, creating a powerful current of air flowing toward the flames. If a fire was set outside the fire zone at that time, the airflow would blow it toward the blaze, burning away all combustible material between the new fire and the original one. Once there was no more fuel, the fire would die out.
Of course, this required clearing a firebreak beforehand. Otherwise, a moment's carelessness could cause the flames to turn back on those who set them. That was why Guo Jing had ordered the soldiers to clear away the reeds in front of their camp first.
Song Qingshu looked in that direction with some confusion. He knew of this because of his