In the Eastern Han Dynasty, the Xiongnu beat him out of the water in the early stage. Unfortunately, the Huns were unlucky and met with natural disasters. "... Xiongnu suffered from early locust plague for years, with thousands of miles of bare land, countless people and animals died, and their strength was greatly reduced ...", Xiongnu was divided into north and south Xiongnu, and the south Xiongnu belonged to Han, while the north Xiongnu remained unchanged, but "... the south Xiongnu attacked its south, while Ding.
Only after the founding of the Eastern Han Dynasty 125, the Yellow turban insurrectionary broke out. More unable to control the Huns, followed by the Three Kingdoms and the Western Jin Dynasty. The southern Xiongnu took the opportunity to enter the customs with all ethnic groups in the south and lived in Shanxi, known as the Five Xiongnu. After that, Chang 'an was destroyed and the Western Jin Dynasty was destroyed. The Eastern Han Dynasty, like the Western Han Dynasty, was really a short-lived dynasty.
So the Huns were very active in the Han Dynasty, but in the Eastern Han Dynasty, natural disasters caused serious losses. After the internal division, the northern Xiongnu took the militaristic line and was besieged and collapsed by all ethnic groups. The southern Xiongnu took the pacifist route and waited for an opportunity to destroy the Western Jin Dynasty! Han people are very passive most of the time.
In the early years of the Eastern Han Dynasty, the Xiongnu in the north became powerful again, controlling the Wuhuan nationality in the western regions and the northeast. When Liu Xiu unified the war, Chong Peng, who supported Yuyang, and Fang Lu, who was from Wuyuan, opposed Liu Xiu. In order to alleviate the pressure in the north, Liu Xiu sent a special envoy to make peace with the Xiongnu, but no results were achieved. In the ninth year of Jianwu (A.D. 33), Liu Xiu sent Afu Wuhan to lead an army to crusade against Xiongnu, but failed to fight for 1 year. After the Eastern Han Dynasty, the government was forced to order the residents of Yanmen County, Dai Jun County and Shanggu County to move to Changshanguan (now Laiyuan North, Hebei Province) and Juyong Guandong. The left part of Xiongnu took the opportunity to enter Jusai, constantly invading south and attacking Dang (now southwest of the eldest son in Shanxi), Fufeng (now Xingping in Shaanxi), Tianshui (now Tianshui in Gansu) and other counties, which posed a great threat to the Eastern Han Dynasty. Unable to fight back, the Eastern Han Dynasty had to take passive defensive measures, which was extremely passive.
At this moment, the Huns suffered from the early locust plague for many years, thousands of miles of bare land, countless human and animal deaths and their strength was greatly reduced. There has been another infighting within the ruling group for the right to rule. In the twenty-fourth year of Jianwu (AD 48), the eight factions of the Southern Xiongnu defeated the Japanese army. I can't stand the heavenly king being subjected to heaven, and I am deeply resentful. At that time, the Huns suffered disasters for years, and most people and animals were killed or injured. Wuhuan (a nomadic people in northern China) took the opportunity to attack again, and the Xiongnu moved thousands of miles north, leaving the desert in the south. Nandan Imperial Pen took the name of his grandfather Uhaanyehe and led 40,000 to 50,000 people to join the Eastern Han Dynasty. The Eastern Han government placed them in border counties such as Beidi, Shuofang, Wuyuan, Yunzhong, Dingxiang, Yanmen and Dai Jun to help the Han people defend the border. Since then, the Huns have been divided into two parts: the north and the south.
After the southern Xiongnu attached to the Eastern Han Dynasty, the strength of the northern Xiongnu was further weakened. Dingling in the north, Xianbei in the east and all ethnic groups in the western regions who have been oppressed by it took the opportunity to rebel. In addition, the Eastern Han Dynasty and the Southern Xiongnu defeated the Northern Xiongnu many times, and the internal contradictions became increasingly serious. More and more people are unwilling to follow the northern Khan and surrender to the Eastern Han Dynasty in large numbers.
By the time of Emperor Han Ming, the national strength of the Eastern Han Dynasty had been quite restored, so the Eastern Han government decided to seize the opportunity to launch a large-scale attack on the northern Xiongnu, curb its invasion to the south and open up the western regions. ……
In the first year of the founding of the People's Republic of China (76), with the support of the northern Xiongnu, countries in the western regions rebelled, attacked and killed all the guards, and besieged Wu and Ji. At that time, the society in the Eastern Han Dynasty was in turmoil, and all the western regions were guarded by Wu He and a captain Ji. In March of two years, he stopped stationing troops in Yiwu and completely abandoned the western regions. However, since then, due to the constant attacks and internal contradictions of the northern Xiongnu and the southern Xiongnu, the number of people entering the customs has continued.
In the spring of 1985, the Northern Xiongnu surrendered 73 groups of refugees. The southern Xiongnu attacked its south, Dingling attacked its north, Xianbei attacked its east, and the western regions attacked its west. The northern Xiongnu couldn't be peaceful and took it away. In autumn, Nandan Khan sent troops to Zhuoxie Mountain (now the eastern part of Altai Mountain in Mongolian Gobi Altai Province), where he met Yu Wen, king of the northern Xiongnu, who was beheaded because of the war. In winter, reply? The next day, the king set out to cover the Xiongnu in the north and captured more than a thousand people. In the first year of Zhanghe River (87), Xianbei invaded the left part of the northern Xiongnu, and the upper left was Khan. The Northern Xiongnu was in chaos, and 200,000 people from 58 departments surrendered to Han.
From the beginning, the Eastern Han Dynasty kept on the defensive against the Huns until the Huns split. The northern Xiongnu was devastated by natural disasters and attacks by surrounding ethnic minorities. The Eastern Han regime just took advantage of the situation to get some cheap money in the later period! !