EIGHTEEN It took four fire lances before one managed to hit its target. The results were better than anything Yi could have expected, though. The explosive ball landed on top of the cart, blossoming into an orange flower that ignited the liquid pooled on the cart beneath it. Yi held his breath as the pool caught fire. A loud boom made him duck for cover as a wave of heat blasted over their hastily dug earth rampart. When Yi dared to raise his head above the rampart, there was nothing left to see except some twisted pieces of metal where the cart had once been. Yi seized Mao's arm. "That's it! The way to break the siege. You must tell the General." He hauled the boy to his feet, and pulled him toward the General's house. Mao resisted. "I am inexperienced in war. Surely the General knows