From March 2002 to September 2003, Xiang Yu and Liu Bang carried on the legacy of Chen Sheng and Guangwu in Qin Ershi, united with the anti-Qin forces and overthrew the Qin Dynasty. In July of the first year, Chen Sheng took the lead in taking anti-Qin actions, which received positive responses from the general public and various anti-Qin forces. In September of the same year, Xiang Liang and an uncle of Xiang Yu, a descendant of Xiang Yan, a famous Chu soldier, fought and defended the Yintong Uprising in Huiji County and gathered more than 8,000 soldiers. Liu bang got 2000 troops from Pei county; In addition, Ying Bu, Qin Jia, Chen Ying, and the old nobles of the former six countries of Wei, Zhao and Qi also went to war one after another. In Chen Sheng, after the failure of the uprising, the old nobles of the original six countries fought against each other, and the anti-Qin armed forces continued to actively resist Qin. In the spring of the following year, under the command of Chen Sheng, Zhao Ping, the rebel general who captured Guangling, named Xiang Liang as the pillar country of the "Zhang Chu" peasant regime in the name of Chen Sheng, and suggested that he lead troops to the western expedition to Qin. In March, Xiang Liang and Xiang Yu led the troops to cross the river, and along the way they collected Chen Ying, Ying Bu, General Pu and other anti-Qin forces, and defeated Qin Jiabu, who occupied the area east of Pengcheng. The team grew rapidly. After defeating Chen Sheng and the peasant rebels, Han went north to Lixian County, in order to eliminate the anti-Qin forces in the north one by one. Xiang Liang sent Zhu Jishi to fight against the unfavorable situation, and when he retreated to Xue, Liu Bangling led the troops to join. At this time, the rebels have grown to more than 65,438+10,000 people. After learning the news of Chen Sheng's downfall, Xiang Liang accepted Fan Zeng's suggestion and made Xiong Xin, the great-grandson of Chu Huaiwang who died in Qin, king, still saying that he was against Qin. Xiang Liang claimed to be Wu Xinjun, in charge of military and political power. After defeating Zhu Jishi in Lixian County, Zhang Han attacked the anti-Qin forces of Wei, Qi and Zhao, defeated the Qi-Wei allied forces in Lin Ji, and attacked Dong 'e of Qi. Xiang Liang led the army to help Qi, and defeated the army at Dong 'e City. The Chu army pursued Puyang Cave, then defeated it and retreated to Puyang defense. At the same time, Xiang Yu and Liu Bangling led troops to attack Chengyang, Qiu Yong, Dingtao and Chenliu in Qin Jun. In September, Zhang Han was supplemented, and the big rebel army was in Dingtao area. Xiang Liang died in battle. In order to avoid being divided by Qin Jun, Xiang Yu and Liu Bang led their troops to Pengcheng, and Chu Huaiwang moved from Xu Tai to Pengcheng. After Ding Tao defeated Xiang Liang, he thought that Chu soldiers were not worried enough, so he led the army to attack Zhao. In September of the same year, Handan, the capital of Zhao, was captured. Zhao Xie and his wife returned to Julu. Zhang Han ordered 200,000 people to besiege Julu, 200,000 people were stationed in the spine south of Julu, and a tunnel leading to the periphery of Julu was built to supply Wang Li's army. Zhao Xie sent people to Pengcheng many times to ask Chu Jun for help. Chu Huaiwang appointed Yi Song as the general and Xiang Yu as the deputy general, and led the main force to go north to save Zhao; Liu Bang took advantage of the emptiness in Guanzhong and led some troops into Xianyang. 1165438+in the winter of 2003 10, he led a large army to Anyang and stayed for 46 days. He wanted to sit and see Qin and Dou, in order to take advantage of fishermen. It's freezing, it's raining hard, the army is short of food, the soldiers are hungry, and the giant deer is in danger. In November, Xiang Yu repeatedly suggested going north to save Zhao immediately, but he didn't listen, so he ordered an army to arise and those who did not obey were beheaded. Drinking all day. Then Xiang Yu killed Yi Song. Renamed General Xiang Yu and led the army to save Zhao. At this time, the deer serenade was eaten up, and Zhao Cong, Yanqi and other countries sent reinforcements, afraid to fight again. In December, Xiang Yu led more than 20,000 people through Zhangshui, and Ying Bu and General Pu saved Zhao, winning the first battle. Chen Yu asked for help. So, Xiang Yu personally led the main force to cross the river, ordered the shipwreck, broke the "cauldron", and each person only took three days of rations to show his determination to fight dea.

In August, Zhang took the opportunity to buy off the generals of Qin Jun and attacked the important pass of Wuguan. At that time, the main force was annihilated by Xiang Yu, and the internal contradictions of the Qin ruling group intensified. Prime Minister Zhao Gao forced him to kill II and made Zi Ying king of Qin. In September, Zi Ying killed Zhao Gao and sent troops to defend the Imperial Pass. Liu Bang bypassed the mountain view and fought with Qin Jun in Lantian. Win all three wars and break the mountain view. The army took control of Xianyang. In October of the first year of Gaodi, Zi Ying, king of Qin, surrendered. Liu bang invaded Xianyang and Qin died. Comments: The Rebel Army inherited the political slogan of Chen Sheng and Guangwu that "there is no way to cut the land and severely punish Qin", and United the anti-Qin forces in various places to overthrow the Qin Dynasty. Xiang Yu's determination to "cross the rubicon" in the Battle of Julu wiped out Wang Lijun, and with active and continuous fighting, forced Zhang Han to land in Tingshui and wiped out Qin Jun's main force. Liu bang used the gap of less troops to be flexible in tactics. He paid attention to unity, collected armed forces along the way to strengthen himself, and finally occupied Xianyang and Qin Dou.