Why did Qin Shi Huang spend money to build the Great Wall and not want to fight the Xiongnu?

I think Qin Shi Huang's approach of building the Great Wall instead of taking the initiative to attack the Xiongnu is correct, in fact, it is not only Qin Shi Huang who did this, and during the Spring and Autumn Period and the Warring States Period before him, the attitude of the kings of various countries towards the Rongyi in the north was mostly defensive. Analyzing the reasons for this, I think there are the following three reasons: first, the cost of war, secondly, whether the strike effect is feasible or not, and one of the more important issues to consider is the national situation at that time.

First of all, the cost of war, we now have a saying called a gun fired ** ten thousand taels, in fact, whether it is ancient or modern, fighting a war is a particularly manpower-consuming and material thing, the army's various supplies to the most consuming national economic strength of the soldiers' grain and horses, grain and grass to the north to attack the ethnic minorities and have a long supply line, if this account is calculated, it can be more and more. At that time, in terms of productivity, how much food could the country produce in a year? The minority armies are different from the farming civilization in the Central Plains, they are soldiers in wartime, they are herdsmen who chase water and grass in peacetime, how much cost can they live, their rations are those cattle and sheep and are more hard-working, as long as they can satisfy hunger, it is enough, there is no need for so many things, as for the grain and grass of horses, the grassland is grain and grass, and it is very inappropriate for us to take the initiative to attack.

The second question is whether we will have a solid strike effect if we take the initiative to attack, why do we say that, because I said above that ethnic minorities live in pursuit of water and grass. They are highly mobile, and it is possible that the Han army will not be able to penetrate into their hinterland with great difficulty, but there are reconnaissance units in front of them. It may be that the large army will not graze here for three months if the yurt is dismantled, so that the large army of the expedition will be in the air, like a hard punch on the cotton, and the effect of the blow is sometimes not good.

There is also the situation within the country, how is the morale of the soldiers when the army goes out to fight, this is also something to consider, whether the internal unity is able to take advantage of the chaos, these are all things we have to consider, so it is often not a particularly good choice to take the initiative to attack ethnic minority tribes.

At that time, Qin Shi Huang wanted to develop the economy and did not want to fight anymore, so he wanted to build the Great Wall to play a certain preventive role.

Answer: The Qin people have two kinds of service, the first is labor, (everyone has to contribute to the country) Taking the Great Wall as an example, only 3o thousand soldiers and 2o million people are needed, it takes 4 years, and 800,000 laborers are summarized. Based on the 2oo thousand Qin people in Daqin, there is no pressure to build ten Great Walls in a lifetime.

It's just that the Qin State doesn't need so many Great Walls. Typically, after recovering Sichuan, he used the people's power to build a Chengdu city and a Dujiangyan. For example, the southern expedition to Baiyue, convenient to transport grain on the opening of a (Guangxi Ling Canal), in order to increase the water supply in the north, on the construction of a Zhengguo Canal, as for the existence of the Great Wall, the country needs to repair it, to the essence of the Qin State:

Attack is greater than defense, and the Xiongnu have the innate conditions to be expanded by the Great Qin. The first emperor was guilty of Qin.

Because the Xiongnu were nomadic people, they did not have an exact place of residence, so it was very difficult to suppress them by force, and they could not even find their location, and because the territory of the Qin Dynasty at that time was very large, the border line was very long, so there were not so many people and energy to guard, and the construction of the Great Wall could reduce the expenditure in this regard.

That's because the power of the Xiongnu was also very large, and he was persistently pursuing immortality at that time, so Qin Shi Huang chose to build the Great Wall to defend against foreign enemies.

Because the construction of the Great Wall can resist the Xiongnu, rather than using force to suppress, it is better to build the Great Wall is more secure.

To fight the Huns to go on an expedition, it will cost a lot of manpower, material and financial resources to serve, and the military strength at that time is not enough, the Great Wall can be built in Lao Sun Xian for a period of time without being harassed by the Huns, and it will also benefit future generations.

It is a very strong people, very strong, and will exhaust all its strength if it wants to fight; The purpose of the construction of the Great Wall is to better defend the movie palace against finance, and to protect the life, tranquility and health of the people.

Because Qin Shi Huang did not take the Xiongnu in his eyes at that time. At that time, the Xiongnu were still loose nomadic organizations that ran away at the first time, and did not have a stable political power. In fact, Qin Shi Huang only built part of the Great Wall, and his main purpose in building the Great Wall was to transmit information rather than to defend against the Xiongnu.

After the unification of the Six Kingdoms, the most important task was to recuperate, and it was not suitable to continue to wage war, and for the sake of future generations, the Great Wall was built.

Because Qin Shi Huang also spent a lot of energy to unify the six countries, it was a bit difficult to destroy the Xiongnu, so he chose to build the Great Wall.

It's cool to destroy the Huns, and it's always cool to build the Great Wall! Qin Shi Huang's ability to unify the six countries shows that he is very bold and far-sighted, and after unification, in order to consolidate his position, he naturally has to work defense to strengthen his own country.