The Xiongnu, a nomadic people who rose up in the north, repeatedly invaded the Central Plains Dynasty, which caused the Central Plains Dynasty a headache, so why was the Xiongnu easy to defeat in the Qin Dynasty, but not easy to defeat in the Han Dynasty?
First of all, let's talk about the military strength of the Qin Dynasty, its military strength was very strong at that time, and it is not difficult to see the momentum of the terracotta warriors on the side of the Mausoleum of Qin Shi Huang that we excavated later, and the army's arms also covered a variety of species, with thousands of warrior figurines, 100 chariots, 100 war horses, and the weapons held by the samurai were all physical objects.
Weapons played an important role in the war, and even affected the success or failure of the war, the Qin Dynasty's weapons manufacturing technology and quality were also the strongest at that time, and the weapons produced were also various and varied, which played a role in promoting the strength of the army and the expansion of the country's territory.
Next, let's talk about various factors, the first point of the social environment, the Xiongnu during the Qin Dynasty were still in a slave society, the Xiongnu at that time did not have a perfect system in terms of productivity or system, the Xiongnu at that time were still relatively scattered, so it was easy to defeat, in contrast, the Xiongnu in the early years of the Han Dynasty, after years of cultivation and survival, the strength was greatly improved, and the Xiongnu at this time were no longer as easy to defeat as before.
The second point is the military strength mentioned above, in the early days of the Qin Dynasty, the national strength was strong, the Qin Dynasty after many years of war baptism, the military strength is gradually stronger, the army combat experience is rich, plus there are many excellent generals, for the Xiongnu who have not yet developed a strong Xiongnu is naturally an easy victory.
Speaking of the Han Dynasty, in the war and chaos in the last years of the Qin Dynasty, the national strength has long been much worse than before, plus the Han Dynasty has just been established, the people and the army are cultivating and recovering national strength, the strength of the army can no longer be compared with the Qin Dynasty, coupled with the strength of the Xiongnu, the Han Dynasty army is of course difficult to overwhelm.
Finally, to sum up, different periods of encountering different enemies naturally led to different results, although the Qin Dynasty was militarily powerful, it defeated the Xiongnu with a single use of troops, but the Qin Dynasty only survived for two years and died, although the early military strength of the Han Dynasty was not as good as the Qin Dynasty, it has been plagued by the Xiongnu, and finally in the period of Emperor Wu of the Han Dynasty, the Han Dynasty defeated the Xiongnu.