C993 The Wind Rises and the Clouds Rise 735

Although Chu Yunxuan had won this battle, he had paid a heavy price.

The reason they dared to set fire to the city walls was because Xin Yi had told Chu Yunxuan that the oil of fire and sand could be used to extinguish the fire.

He first had people coat the walls with a layer of sand, which was then covered with a layer of plant leaves