Fire Bulls, the tactics invented by the Warring States. Yanzhao Wang Shi, Yan will break the Yi Yi, Tian Shan insisted on Jimo (now Shandong Pingdu). In the first 279 years, Yan Hui Wang was in place. In the field, the Yanjun army swindled and made it paralyzed. At the night, it used a cow for more than a thousand heads. The horns were tied to the arsenal. The tail was tied with sputum and filled with oil. It was ignited by fire, rushing to the Yan army, and then rushed with five thousand warriors. The defeated Yan Jun, killing the robbery. Tian Dan took advantage of more than 70 cities. However, the authenticity of the Fire Bulls is doubtful. During the Civil War between the Kuomintang and the Communist Party, both the Kuomintang and the Communist Party tried the Fire Bulls, but the effect was all ended. The cattle that were frightened by the fire would not rush to the enemy camp, but instead collided in the same place. , causing great casualties.