Beginning in 214 - 213, Qin Shi Huang sent his general Meng Tian to lead his army to attack the Xiong Nu (匈奴) in the north, crossing the Yellow River Loop in the north, and the depth of the attack reached north of today's Yinshan Loop and south of the Gobi, and after Qin's great victory over the Xiong Nu (匈奴), he set up Jiu Yuan (九原) county, with its seat in today's Baotou. From then on, the Yellow River Loop area was returned to China forever. It is also worth mentioning that subsequently, Mengtian built the Great Wall of Ten Thousand Miles on the basis of the Great Walls of Yan, Zhao and Qin, which became the basic boundary of the territory of China's agricultural civilization in the following 2,000 years.
2. During the period of Emperor Wu of Han Dynasty
In the second year of Yuan Shuo of Emperor Wu of Han Dynasty (127 years ago), Wei Qing, the general of Han Che Cavalry, launched the Battle of Hetao, which was an attack on Xiong Nu. After defeating the Xiong Nu and recovering the Hetao region occupied by the Xiong Nu, Emperor Wu of the Han Dynasty established the Shuo Fang County in Hetao and built the major town of Shuo Fang City. This reaffirmed China's rule over the Hetao region.
3, Han Wu Di period
Han Wu Di Yuan Hao two years (121 years ago), Hussar General Huo Daizi in the Hexi Corridor region launched two Hexi battle, defeated the Xiong Nu, a one-off occupation of the Xiong Nu's last piece of fertile land - the Hexi Corridor, so that the Xiong Nu people lament: "the death of my Qilian Mountains, so that my six animals do not reproduce; the loss of my Yanzhi Mountain, so that my women without color." Emperor Wu of the Han Dynasty set up Zhangye County in the western part of the river, and built the Great Wall and the Yumen Pass and Yangguan Pass on the edge of the desert west of today's Dunhuang. From then on, the Hexi Corridor was returned to China forever, only to be occupied by the Tubo after the middle of the Tang Dynasty, and retreated into the Jiayuguan Pass during the Ming Dynasty. The conquest of the Hexi Corridor is arguably the most important conquest in Chinese history, and from then on China opened the door to Central Asia.
4, Han Wu Di period
Han Wu Di Yuan Hao four years (119 years ago), Wei Qing, Huo Daizi two concurrently, launched the aim of conquering the Xiongnu desert north campaign. Wei Qing attacked as far as Hang Ai Mountain in today's Mongolia and defeated the Xiongnu. Huo Zaizi went all the way to find the main force of the Xiongnu and won a great victory. He was able to capture the main force of the Xiong Nu and won a great victory. He sealed the victory and pursued the remnants of the Xiong Nu all the way to Hanhai (Lake Baikal in Russia today). This was the greatest expedition ever undertaken by a central Chinese government army. The campaign was not significant for expansion; Han was unable to occupy the land in northern Desert for long, and after the Han army retreated, it did not establish an administrative structure there, and the Xiongnu soon reoccupied the north of the desert.
5. The period of Emperor Wu of Han Dynasty
In the fifth year of Yuan Ding of Emperor Wu of Han Dynasty (112 years ago), Lu Bode, general of Fu Bo of Han Dynasty, defeated South Vietnam in Panyu, destroyed South Vietnam, and set up nine counties, such as Nanhai (ruled by today's Guangzhou) and Jiaozui (ruled by today's Hanoi), and from then on, South China and North Vietnam were included in the territory of China. (Qin Shi Huang first developed the south of the Five Ridges and set up three counties, but South Vietnam soon became independent.)
6. During the period of Emperor Wu of Han Dynasty
In the second year of Yuanfeng of Emperor Wu of Han Dynasty (109 years ago), Yang Dou, the general of Han Dynasty, and Xun Pig, the left general of Han Dynasty, attacked Wei's Joseon Dynasty in two separate ways of water and land, and Wei's Joseon Dynasty surrendered in 108 years ago. The five counties of Liaodong County (today Liaodong Peninsula), Xuantu County (today northeast of Liaoning, North Korea), Lelang County (today Pyongyang), Zhenpan County (today north of Korea), and Imtun County (today northeast of Korea) were set up by the Han Dynasty, which fully demonstrated that Liaodong and the northern part of the Korean Peninsula had been China's territories since ancient times.
Han Wu Di's contribution to China's territory is unrivaled in Chinese history, as he consolidated the Hetao, and to the north and west he occupied the southern part of Mo Nan, the Hexi Corridor, and Qinghai. To the south he incorporated southern China, northern Vietnam, and developed the southwest. To the east he occupied Liaodong and northern Korea. Of these newly conquered territories, all but northern Korea and northern Vietnam became an integral part of the Chinese map.
7. The period of Emperor He of the Han Dynasty
In the first year of the Yongyuan era of the Eastern Han Dynasty (89), Dou Xian and Geng Bing, attacking in three directions, defeated the northern Xiongnu in the Jilu Mountain. Deng Yanran Mountain (now Meng Zhanyang Hang Ai Mountain) carved stone to remember the success and return. The Eastern Han's attack on the Northern Xiongnu was very resolute, but China was unable to occupy the northern part of the desert for many generations, so it did not help much in territorial expansion. Instead, the Eastern Han's defeat of the Northern Xiongnu provided space for the Xianbei to develop, making the Xianbei a great danger to China thereafter.
8, Han Mingdi period
Eastern Han Mingdi Yongping sixteen years (73 years) to the and Emperor Yongyuan six years (94 years), the Eastern Han false horse Ban Chao rate of special forces, across the Western Regions, the Western Regions of more than 50 countries are Nasukuni subjugation, the son of Ban Yong succeeded as the Western Regions of the long ambassador, father and son, so that the Western Regions of the Eastern Han Dynasty after the Chinese central government in a state of long-term subjugation. Although the Western Regions were not formally returned to China, the status of the Western Regions as Chinese dependencies in history was confirmed, which provided the historical and theoretical basis for the inclusion of the Western Regions in China's territory thereafter.
9. During the reign of Emperor Xian of the Han Dynasty
In the twelfth year of Emperor Xian of the Eastern Han Dynasty (207), Prime Minister Cao Cao annihilated the main force of the Wuhuan and the remnants of Yuan Shang and Yuan Xi in the Bailangshan Mountains (LiaoXi area on the border of Liaoning and Inner Mongolia today). The western part of Liaozhi was formally incorporated into China.
10, the Three Kingdoms period
Three years after the Three Kingdoms Shu Jianxing three years (225 years), Shu Prime Minister Zhuge Liang pacified Nanzhong (present-day Yunnan, Guizhou and southwestern Sichuan region). He built Yongchang County (the seat of which is in present-day Baoshan, Yunnan), from which the Yunnan-Guizhou Plateau was incorporated into the Chinese territory.
11, Tang Taizong period
Tang Taizong Zhenguan three years (629), Li Jing, Secretary of the Ministry of Military Affairs, led the army to counterattack the East Turkestan, defeated the East Turkestan, captured Jie Li Khan, destroyed the East Turkestan. He built the An Bei Du Fu (安北都护府). The northern part of the desert was incorporated into China's territory, but China's conquest of the northern part of the desert could never be consolidated, and 50 years later, the Turks resumed their rebellion.
12, Tang Taizong period
Tang Taizong Zhenguan nine years (635 years), the West China Sea Road marching Li Jing led the army in the Park Sea (now the source of the Yellow River in Qinghai Lake Eling Lake and Zaling Lake) broke the Tugukhun Department, the Tugukhun Murong Shun rate of return to the Tang dynasty, was named Khan, the king of the county of Xiping, the Tugukhun became a vassal state of the Tang dynasty.
13, Tang Gaozong period
Tang Gaozong Xianqing two years (657 years), Su Dingfang, the right general of the Tunwei led an attack on the Western Turkestan Shabaluo Khan, in the Golden Tooth Mountain (now Tashkent, Central Asia), defeated the Western Turkestan Shabaluo Khan. After the destruction of Western Turkestan, Tang set up the Yangchi and Kunling capitals in Western Turkestan's homeland, with Tang generals of Turkic descent, Ashina Buzhen and Ashina Mishu, as the capitals. The territory of Tang Dynasty was expanded to the Ili River basin. Thereafter, Emperor Xuanzong of the Tang Dynasty struck down the Central Asian Turks and expanded his territory to the river region west of the Onion Ridge (Amu Darya and Syr Darya River basins).
14. During the reign of Emperor Gaozong of the Tang Dynasty
In the fifth year of Emperor Gaozong's Xianqing reign (660), Su Dingfang, the general of the left guard, drew his troops to cross the sea and defeated Baekje's army at the mouth of the Xiongyin River (present-day southern South Korea), and then marched forward on land and sea to Gubatseong, the capital of Baekje (present-day Jeonju, South Korea). Baekje was defeated by Su Dingfang, and the king, Fuyu Yizi, was forced to lead the people to surrender, and Baekje was destroyed. Tang set up five capitals in Baekje, including Kumazu.
15, Tang general chapter period
Tang general chapter of the first year (668 years) to Li Jiao for the Liaodong Road, commander in chief of all the armies, split the road to attack Goryeo. The Tang army captured Pyongyang and destroyed Goryeo. The Tang court in Pyongyang set up the Andong Capital Palace, Xue Rengui for the inspection school Andong Capital Guard, led 20,000 troops stationed in this important town. Since then, the northern part of Korea, with Pyongyang as its center, became an inseparable part of China for more than 200 years.
16, Mongolia period
13th century Yuan dynasty Mongolia's emergence, the crazy expansion of the world trembled, but unfortunately an indigenous nomadic people can not adapt to the civilized world, and soon separated from the Ruoxi.
17, the Qing Dynasty period
Manchurian Qing Dynasty (1644-1911 period), the early Manchu Qing Dynasty is still a little bit of a contribution to the Chinese people, early on the fight against separatism is not thorough enough, but at least the rule of the Ming Dynasty failed to deal with the present Outer Mongolia and other areas, but in the Kangxi dynasty lost control of the east of Lake Baikal, thus providing a solid foundation for the Russians to enter the rich Heilongjiang River basin. Heilongjiang River Basin, which provided a solid foundation for the Russians to enter the rich Heilongjiang River Basin. The later rulers of the Qing dynasty, incompetent, humiliating, and bringing the most serious disaster to the Chinese nation, which is the Chinese people will never forget the shame of the children and grandchildren.