Qin in the Warring States period had no emperor at that time. He works for Zhao Haoqi of Qin. In the Battle of Yi Que, Qin Jun, the God of War of Qin, led his troops to defeat Wei and South Korean allied forces in Yi Que, Longmen and Luoyang, wiped out 240,000 enemy troops, and captured several Wei towns and most areas east of Anyi, South Korea. Wei and North Korea ceded territory for peace. In the battle of Yan Ying, a famous Qin, led his troops into the hinterland of Chu, and captured Yan (now southeast of Yicheng, Hubei) and Ying (now northwest of Jiangling, Hubei) in a large-scale battle. The victory of this campaign made Qin State gain a lot of territory of Chu State, and it also dealt a serious blow to Chu State. In the battle of central Guizhou (276 BC), Chu was attacked in vain, and the king of Chu Xiang was forced to give Yong (now Zhushan, Hubei Province) and the area north of Hanshui River to Qin. Recover the witch and the middle of Guizhou, and set up the middle of Guizhou county at the beginning. In the Battle of Huayang (273 BC), the generals of the State of Qin set out from Huayang (now Xinzheng North, Henan Province) and made a long-distance attack, defeating the combined forces of Zhao and Wei. Wei Jun150,000 people were wiped out in one fell swoop, and three generals Wei were captured alive. Wei Prime Minister Mang Taiwei fled and attacked Zhao General Jia Yan. After a fierce battle, the Zhao army was defeated and wiped out 20,000 enemy troops. Most of Wei Jun's main forces were annihilated and unable to fight again. Nanyang (south of Taihang Mountain and north of Yellow River) was ceded to the State of Qin for peace. In the Battle of Jiaocheng (264 BC), Wu Qin 'an led his troops to capture nine cities including Jiaocheng (now northeast of Quwo, Shaanxi) in South Korea, and annihilated more than 50,000 new Korean troops. Hanting fell into chaos and began to seek defense, but it was too late, and soon lost Nanyang (now southwest of Henan) and Shangdang (now southeast of Shanxi). The battle of Changping was the earliest and largest encirclement and annihilation war in the history of our country. The war took place in Qin and Zhao, two countries with the greatest strength to unify China. Zhao replaced Lian Po with Zhao Kuo, which led to Zhao being starved to death for 46 days or even committing suicide. Desperate, Zhao Kuo regrouped his troops and divided them into four teams, which broke through in turn, but never got out. Zhao Kuo led a good soldier and was shot by Qin Jun. Zhao Kuo's army was defeated. More than 400,000 soldiers surrendered in vain. In vain, he tricked and killed all Zhao's soldiers, leaving only 240 soldiers to report back to Zhao.