In this issue, we will talk about a historical phenomenon worth pondering: that is, have you found it? In the history of China, there are few victories from south to north, but there are many examples of victories from north to south! In other words, when there are separatist regimes in the north and the south, the north can always destroy the south in the end. What we are talking about is a general geographical direction, so I won't go into details. One of the most widely circulated jokes on the Internet is: the north hits the south all the way and undresses all the way. The more you fight, the easier it is. Fight all the way from the south to the north. Get dressed. Finally, it's too cold to fight. But is this really the case? This may be a reason, but it is by no means the main reason.

There are many examples of the failure of the Northern Expedition in history, such as Yue Fei's failure in the Northern Expedition, Zhuge Liang's failure in the Northern Expedition and Zu Di's failure in the Eastern Jin Dynasty. But there were also some successes, such as going all the way from south to north under the guise of a wise king, and Zhu Yuanzhang also opposed Yuan from the south. There are many successful expeditions to the south, such as: Cao Cao attacked Wu Dong and Han Shu, the Qing army went south into the Central Plains, and Mongolian cavalry went south.

Here we need to find out what is the main reason for the victory of the Northern Expedition. The answer is money. Fighting is economy, that is, money. In Sun Tzu's Art of War, Sun Tzu said: The method of using soldiers costs thousands of dollars a day, rides thousands of chariots and travels thousands of miles to eat, then the internal and external expenses, the use of customers, the materials of glue paint, the battle of armored vehicles, and then the training of 100 thousand teachers. "You see, it costs a lot of money to fight with an army of one hundred thousand people. A country with a poor economic foundation simply cannot afford to support a team of 100,000 people.

We should know that the grain and grass in ancient times are the key before the military forces move, especially in long-term operations, where a front is thousands of miles long, and light grain transportation is a big problem. According to the actual case in ancient times, if you want to transport a soldier's rations to the front, you need an average of ten grain carriers to escort them to the front, and you must bring enough food and grass to the grain carriers and horses and cattle when you go. In this way, there are100,000 soldiers fighting at the front, and 900,000 or more logistics personnel are needed at the rear. Don't think this is alarmist. Just look at the fact that Emperor Wu of Han Dynasty beat Xiongnu.

During the reign of Emperor Jing of Han Dynasty, due to the rule of Wenjing, the economy of Han Dynasty was unprecedentedly prosperous. The grain and copper coins accumulated in the national treasury are enough to spend fifty or sixty years. When Emperor Wu of the Han Dynasty was not as fond of saving money as his father, he spent it when he had money. Where are the flowers? Xiongnu, of course. Under the arrogance of Emperor Wu of the Han Dynasty, the once powerful domestic refugees in the Han Dynasty were everywhere, and they were on the verge of national subjugation several times. The frightened Emperor Wu of the Han Dynasty committed a crime in his later years. Thanks to General Huo Guang, seeing that the situation was wrong, he immediately adjusted the national policy and continued to recuperate, so that the Han Dynasty could last for several years.

The main reason for the failure of the Northern Expedition was that before the Song Dynasty and even the Ming Dynasty, the economic strength of the North was more developed than that of the South, and the main food crops were also in the North. The south needs to prepare food for several years before it dares to wage war, while the people in the north just wait for them to come. As long as they are firm and can't defend themselves, they will go back after eating their food. Zhuge Liang came out of Qishan six times. Will Sima Yi be like this soon? No matter how much you scold Zhuge, Sima Yi is unmoved. Isn't it beautiful for Zhuge Liang to go home after eating?