战国时,齐国和燕国发生了战争。燕军势如破竹,连破齐城七十余座,齐国仅剩二城。齐国将军田单率残败之军在即墨进行抵抗。田单和军民同甘苦,共患难,上下一心,同仇敌忾,终于打败了敌人,收复了失地。田单也因功封安平君,当了丞相。又过一段时间,齐国恢复了元气,强大起来,开始扩张势力,开疆 Warring States period, Qi and Yan States took place in the war. Yan army impregnable, even broken Qi City more than 70 seats, Qi left only two cities. Qi Jun general field single rate of defeat army in Jimo to resist. Tian Dan and soldiers and civilians with both hardship and suffering, a total of one heart, one with the enemy, finally defeated the enemy, regained the lost ground. Tian Dan also due to Gong Feng Anping Jun, when the prime minister. After a while, Qi returned to strength and became strong. It began to expand its power and open up the border