The time when Qin Shihuang completed the unification of land and sea.

After Qin came to power, Ren, Li Si and others actively pursued the unification strategy. In 236 BC, a war broke out between Zhao and Yan. Zhao sent troops to attack Yan, and Qin sent Wang Jian and others to attack Zhao in the name of saving Yan, and successively captured Zhao's Kuihe River, Yiyang (northwest of Nanyang), Hejian (southeast of xian county, Hebei) and Anyang (southeast of Yangyuan County, Hebei). The Zhangshui River Basin has been occupied by Qin.

In 234 BC, the State of Qin attacked the State of Zhao on a large scale, and established Yanmen County and Yunzhong County with the land seized from the State of Zhao. In 23 1 year BC, Wei was forced to cede some land to Qin, and South Korea was also forced to cede Nanyang land to Qin. The Qin Dynasty sent Naishi Teng as the pseudo-guard of Nanyang.

In 230 BC, Qin sent Shi Teng to attack North Korea, captured Wang Han 'an, established Yingchuan County in North Korea, and South Korea perished. At this time, there was a drought in Zhao. Wang Jian, the general of Qin State, led the soldiers down to Jingxing County, Hebei Province, and Yang Duanhe, the general of Qin State, led the army from Hanoi to Handan, the capital of Zhao State. Li Mu and Sima Shang were sent to resist. Guo Kai, the minister of the State of Zhao, was bought by the State of Qin. It was rumoured that Li Mu and Sima Shang were plotting against him. The prince of Zhao replaced Li Mu and Sima Shang with Zhao Cong and Yanju, and killed Li Mu.

In 229 BC, Wang Jian defeated Zhao, killed Zhao Cong and captured Wang Zhao. Zhao Gongzi Jia led hundreds of people to escape from his clan to Zhao and became the king's own. Qin established Handan County in the area of Zhaodu Handan.

In 227 BC, the State of Qin sent Wang Jian and Xin Sheng to attack the State of Yan. Yan and Dai rose up to resist and were defeated by Xiao Zhixi. The following year, Qin Jun captured Ji Cheng, Yan Dou. The prince likes to move the capital to Liaodong. Li Xin, commander-in-chief of the Qin Dynasty, led the troops in pursuit. Prince Xi listened to Wang Jia's plan, killed Prince Taizi Dan, and dedicated his head to the Qin Dynasty for peace. In 226 BC, there was a rebellion in the capital of South Korea. Qin sent troops to quell the rebellion in South Korea and took the opportunity to execute Wang An.

In 225 BC, Wang Ben, the general of the political faction of the King of Qin, attacked Wei, surrounded Dewey Girder (Kaifeng City) and led the Yellow River to fill the city. In three months, Daliang City was broken, Wang Wei fell and Wei was destroyed. Qin established a county in the east of Wei.

In 225 BC, the State of Qin sent Li Xin and Wu Meng to attack Chu with 200,000 troops. Li Xin attacked Chu Pingyu (north of Pingyu County) and Wu Meng attacked Chu's bedroom (Linquan County, Anhui Province), and achieved initial victory. Qin Chu's two armies met in Chengfu Town (now the father town in the southeast of Bo County, Anhui Province). Chu Cheng was unprepared to launch a counterattack and defeated Qin Jun. After Qin Dynasty, Wang Jian was sent to take 600,000 troops to war, and defeated the Chu army in Qi (now the southeast of Su County, Anhui Province), forcing Chu to commit suicide in Xiang Yan. Then Qin Jun invaded Shouchun, the capital of Chu, and captured the king of Chu. Qin Gui was originally located in Jiujiang County (Shouxian County, Anhui Province) and Changsha County (Changsha City, Hunan Province).

In 222 BC, Wang Jianping designated the Jiangnan area of Chu State, surrendered to the King of Yue, and set up Huiji County, and Chu State perished. While the State of Qin destroyed Chu, it continued to expand eastward, establishing counties in succession, seizing all the land and establishing Xue Jun (Qufu County, Shandong Province). In 222 BC, the king of Qin sent Wang Ben to attack Liaodong, the state of Yan, to capture the state of Yan and destroy it. Then, Li returned to the Wangs and established (southwest of Yuxian County, Hebei Province) and Liaodong County (old town of Liaoyang City, Liaoning Province).

In 22 1 year, Wang Ben, the general of Qin dynasty, attacked Qi from the south of Yan State, captured Wang Jian, destroyed Qi State, and established Qi State (northeast of Zibo City, Shandong Province) and Langxie County (Xiahe City, southwest of Jiaonan County, Shandong Province) in his hometown.

From 230 BC to the demise of Qi, during the period of 10, Qin annexed six countries in succession, and then in 2 19 BC, the "Battle of Qin Attacking Baiyue" began, pacifying Baiyue in the south, completing the great cause of reunification, ending the kingdom era of aristocratic vassal dictatorship and entering the imperial era of absolute monarchy.

Extended data

In the first 22 1 year, after Qin Shihuang completed the great cause of unifying the Central Plains, he set out to formulate the strategy of finding Xiongnu in the north and Baiyue in the south. After a series of preparations, 2 18 years ago, Qin Shihuang ordered generals Tu Youyou and Zhao Tuo to lead a 500,000-strong army and launched a war to conquer the Vietnamese in Lingnan. Qin Junbing was divided into five roads, passing Yuechengling in the north of Guangxi, Jiuyi Mountain in the south of Hunan, Nankang and Yugan in Jiangxi, and marching towards Guangdong, Guangxi and Yueguo.

In the thirty-three to thirty-four years of Qin Shihuang (2 14-2 13), Qin Shihuang sent general Meng Tian to attack Xiongnu in the north. ?

During the Warring States Period, countries in the Central Plains had no time to look north, and Xiongnu often raided the northern borders of Qin, Zhao and Yan. In order to remove the threat of Xiongnu to Qin, Qin Shihuang ordered Meng Tian to lead 300,000 troops to attack Xiongnu in the north.

In the spring of the thirty-third year of Qin Shihuang (2 14 BC), Meng Tian's main force went out of the Great Wall from Shang Jun (now south of Yulin, Shaanxi) and attacked its east; Yang Wengzi led a team from Xiaoguan (southeast of Guyuan, Ningxia) to the Great Wall and attacked its west. Xiongnu fled after defeat. Qin then seized the land in Henan (south of the Inner Mongolia River and the land in Yike). There are 44 counties along the river, and immigrants will be cultivated.

Due to the continuous attack of Xiongnu, the following autumn, Qin Shihuang ordered Meng Tianjun to cross the Yellow River north, take Gaoque (Jilan Pass in the middle of Langshan Mountain in Inner Mongolia), capture Yangshan Mountain (Langshan Mountain and Yinshan Mountain in the north of Wu Jia, Inner Mongolia), and take a vacation to the north (Jiashan River area in the south of Wu Jia). The Huns were defeated and moved north.

In order to consolidate the Henan area, Qin established Jiuyuan County (the county governs Jiuyuan, northwest of Baotou City, Inner Mongolia). In order to prevent Xiongnu from going south, Meng Tian was ordered to recruit a large number of migrant workers to build the Great Wall of Wan Li from Lintao (Min County, Gansu Province) in the west to Liaodong in the east, which played an important role in consolidating the northern border of Qin. The Qin Dynasty's victory over Xiongnu was the first and heaviest blow to the invading army of Xiongnu nobles. Because Tou Man was invincible in Qin State, Xiongnu Khan was forced to "move northward" for more than ten years.

2 18 years ago, Qin Shihuang ordered generals Tu Youyou and Zhao Tuo to lead 500,000 troops and launched a war to conquer the Vietnamese in Lingnan. Qin Junbing was divided into five roads, passing Yuechengling in the north of Guangxi, Jiuyi Mountain in the south of Hunan, Nankang and Yugan in Jiangxi, and marching towards Guangdong, Guangxi and Yueguo. Among them, Qin Jun, which occupied Panyu, was the fastest. They passed through Jiuben Fortress, went down the Beijiang River, went straight to the Pearl River Delta and occupied Panyu.

The two armies that attacked the Guiyue people were familiar with the terrain, good at climbing mountains and wading, and attacked Qin Jun at night, which made Qin Jun miserable. Once the Vietnamese won, Qin Jun's grain route was cut off and supplies were insufficient, and Tu Youyou, one of the commanders, was also killed. Due to lack of food, the Commander-in-Chief was killed, Qin Jun suffered hundreds of thousands of casualties, and the war fell into a confrontational stage, which lasted for three years.

In order to reverse the shortage of troops and the difficult supply of grain and grass, in 2 17, Qin Shihuang ordered Yu Shilu, Qin Shihuang's supervisor, to dig a canal connecting Hunan and Lishui in Xing 'an, Guangxi. As the total length of Lingqu is only 34 kilometers, the amount of the project is not large, and Qin Jun was soon completed. Lingqu connects the Xiangjiang River and the Pearl River system, and Qin Jun's wages can be continuously transported to Lingnan, providing a reliable material guarantee for Qin Shihuang to complete Lingnan.

2 14 years ago, Qin Shihuang ordered Ren Tao and Zhao Tuo to attack Baiyue tribe again. Qin Jun was on a roll, and soon defeated the resistance of Xi 'ou people in Guangxi and Luoyue people in central and northern Vietnam, and the whole Lingnan area was incorporated into the territory of the Qin Dynasty.

In order to maintain the stability of Lingnan, Qin Shihuang ordered the soldiers who marched into Lingnan to stay in the local "garrison". In addition, there are a large number of Central Plains immigrants to Lingnan area. The remaining soldiers and immigrants, except a few who married migrant women from the Central Plains, mostly married Yue Nv. They brought advanced culture, agriculture and handicraft technology to Lingnan area, and made great contributions to the development of Lingnan.

The war at the southern foot of Qinling Mountains was an important part of Qin Shihuang's war to unify China. For the first time in history, Lingnan was formally incorporated into Chinese territory, making the Yue nationality a member of the Chinese nation. It has played an important role in promoting the integration of Han and Vietnamese nationalities and the social, political, economic and cultural development of Lingnan.