In February 312, Henan, on the north bank of Rushui, Gepi (now north of Xincai County, Henan Province).

Rushui is still there, renamed Ru River, is an important tributary of the Huai River, from northwest to southeast. At that time, when the ecological environment was not destroyed, Gepi, located in the lower reaches of Rushui, had convenient water and land transportation, and its geographical location advantage was particularly obvious.

After the Battle of Luoyang, Shile garrisoned his troops there.

The Western Jin Dynasty perished, and for the Xiongnu Han Kingdom, the remaining thing was to sweep away the remnants of the Jin Dynasty. Then occupy the Central Plains, operate Guanzhong, sweep the south of the Yangtze River, and then dominate the world. However, with Liu Yao in Guanzhong, Shi Le's task was to go south, cross the Yangtze River, conquer Jianye, capture Sima Rui, the king of Langya, who was guarding the south of the Yangtze River, and then put the entire Jiangnan region under the territory of the Xiongnu Han Kingdom.

As a result, Ge Pi became the best choice for Shi Letun's troops to prepare for war, Shi Le's camp there, levy taxes and build ships, and prepare to cross the Yangtze River into the Huai River, and the soldiers pointed directly at Jianye.

With a grand plan, excellent generals, the most elite soldiers, and the might of victory in Kuxian and Luoyang, no one doubted that Shile's victory would be as simple as being captured. At that time, even Sima Rui believed that the day of his defeat was not far off.

But unfortunately, Shile encountered heavy rain, and it was a heavy rain that did not stop for three months, and the weather was not beautiful, who could do anything about it? In short, Schle and his army soaked in the continuous rain for three months.

It's really a big rain, and it's raining in time.

Fighting with people, Shi Le was the victor, captured Gou Xi, eliminated Wang Mi, and will eradicate Wang Jun and Liu Kun in the future; and Tiandou, but Shi Le is a complete loser. Disease and plague, no food or drink. Before the actual battle began, Schle's army had already lost more than half of its troops, and now we call this situation "non-combat attrition". At a time when medical and health conditions were so poor that a small cold and fever was enough to kill a person, I think the resistance of Schle's army in the face of nature can best be summed up in one word: resigned to fate.

If we believe in fate, we can really believe that in fact, it is God who is blessing the life of the Great Jin Dynasty.

The ancients were very particular about warfare, and the dispatch of troops to fight depended on whether they occupied the conditions of time, location, and people. For Shile, it is a different scene, in the face of the Yangtze River's natural danger, the first loss of geographical advantage; Heavy rain in March, and then when the sky is lost; As for the people, there is no food, there is no logistical support, the so-called people are just empty words.

Shi Lejin has no way to advance.

And what about the retreat?

The previous year, Shi Le annexed Wang Mi, which was called the same room in the Xiongnu Han State, for Liu Cong, without asking for instructions, he killed the generals of the court, Shi Le's heart of disobedience was clearly revealed, and no amount of rewards could cover up the rift between Shi Le and Liu Cong. If Shi Le returns in a gloomy manner, then Liu Cong may re-mention the old account at any time, and with just a small gesture, someone in the court will stand up and discuss with Shi Le every detail about Wang Mi's death, and at that time, everything will not be up to Shi Le himself.

There is a strong enemy in front, and there is no way back. Suddenly, Shiler fell into a desperate situation from his constant victories.

Before asking Zhang Bin, Shi Le was eager to hear the opinions of the generals who were born and died together. After all, Shi Le has his own thoughts: Except for Zhang Bin, there is no capable person under my account?

The "Eighteen Horsemen" who robbed homes and houses with Shile back then have become the backbone generals of Shile's army at this moment. The elder brother was the most reliable, and Schler cast them an inquiring look.

No one spoke.

Right Changshi stepped forward, there was no way, the responsibility was to do the work of making suggestions. "Let's surrender!" Diao Ying's face was full of solemnity after careful consideration.

Shile was speechless, this is my humerus?

The old brothers of the "Eighteen Horsemen" finally couldn't bear the oppressive atmosphere and began to speak, "Please take 300 foot soldiers, take more than 30 boats, climb the city at night, behead General Wu, get the city, and eat the rice in the warehouse." This year, we will break through Danyang, set the south of the Yangtze River, and tie up the children of the Sima family with all our lives."

In fact, it means that they are going to sneak attack. If you don't have anything to eat, grab some food to eat, as for words like "breaking the south of the Yangtze River and setting Danyang", it's just a brag to be strong, where is it to be able to achieve it with a little fiddling! It's a bad idea, but at least it's better than advising Shile to surrender.

Shi Le looked at Zhang Bin, who was sitting on the side very calmly, this guy can always come up with a great idea at a critical time, it seems that he has to be counted on.

"Zhang Bin, what do you think?" Shile was full of anticipation, and the man's next words were his last hope.

Zhang Bin got up, saluted, and then said the following paragraph:

The general captured the imperial capital, imprisoned the Son of Heaven, killed the prince, his wife and concubine, and promoted the general's hair was not enough to count the general's crimes, so how could he return to the ministers! After Zhu Wang Mi last year, it is not suitable to build here. In the hundreds of miles of rain that fell from the sky, the general should not stay. There are three solids in Zhen, west of Pingyang, four mountains and rivers, there is a tendency of throat, it is advisable to migrate to the north. Defeat the rebellion, the river is established, and there is no place for the right of the general. Jin Zhi Bao Shouchun, afraid of the general's attack, now the pawn heard that the army is back, will be pleased with the enemy, not to mention the surprise of the attack. The baggage is from the north road, the army is to Shouchun, the baggage is over, the army is back, why not be afraid of advancing and retreating! (The Book of Jin: The Chronicles of Shile)

This passage is historically known as the "Gepo Countermeasures" and is important and far-reaching for Schler's strategic decision-making. In the countermeasures, Zhang Bin first refuted the possibility of surrender, pointing out that Shi Le was the main culprit of the demise of the Western Jin Dynasty, and surrender would never be forgiven; Secondly, Zhang Bin pointed out that Shiler's development should focus on North China, especially the important town of Yecheng; Finally, Zhang Bin made a careful analysis of the feasibility of retreat, believing that the Jin army only sought self-preservation and would not pursue, so it could retreat safely.

Shile accepted Zhang Bin's plan, led his army back to the north, and focused his business on the north.

The policy of determining the security of the country began from the time of Shiler. Five hundred years ago, Han Xin presented Liu Bang with "Hanzhong countermeasures", and after a conversation, Liu Bang and the overlord Xiang Yu fought for five years without being discouraged, and finally became the unification of the world after a hundred defeats; A hundred years ago, Zhuge Liang presented "Longzhong Pair" to Liu Bei, and later Liu Bei had a foundation of one of the three parts of the world; A thousand years later, Li Shanchang presented a nine-character mantra to Zhu Yuanzhang: "Build a high wall, accumulate grain, and slowly become the king", in the era of heroes at the end of the Yuan Dynasty, Zhu Yuanzhang relied on these nine words to finally clear the world and rebuild China.

For Shi Le, the role of Zhang Bin's suggestion was not less than them, there was no Li Shanchang at that time, and there was no "nine-character mantra", so in history, Zhang Bin's "Gepi Countermeasures" and Han Xin's "Hanzhong Countermeasures" and Zhuge Liang's "Longzhong Pair" are called the three great wonders of the world. From then on, Shile, who specialized in guerrilla warfare, began to concentrate on establishing his own base areas, and began a strategic shift from mobile movement warfare to separatist forces with bases and rear.

In other words, Zhang Bin's words made Shi Le truly transform from a worker in the Xiongnu Han Kingdom to an entrepreneur working for himself. That is, from a hound, to a hunter, to hunt, and to possess the prey.

The road back to the north was very difficult, the Han people learned to clear the wilderness, and the Shile army without supplies even had the tragedy of soldiers "eating each other", but after all, the swords and guns were in hand, and Shile grabbed a fierce battle, which not only solved the enemy but also solved the supply. After a period of overcoming obstacles, Shile came to Xiangguo. And based on this place, he began to fight for himself in all directions.

Did Liu Cong notice Shi Le's abnormality?

No.

In 313, Chen Yuanda, the court commander, had made a special report to Liu Cong about Shi Le's dissent, but Liu Cong, who had done too much exercise in bed, had long lost his former acumen. Shile has good news frequently, Shile has humility and humility, why do you still say that Shile has a bad heart? Kill Wang Mi? You know, that's for a reason.

Liu Cong didn't believe that Shi Le, who had always been born and died for the Xiongnu Han Kingdom and had always been fighting on the front line, would suddenly fight back.