Three years after the Battle of Shiting (230), Wei Ming Emperor Cao Rui personally planned to win the battle. After some secret selection, Cao Rui set his sights on a young man - Yinfan. Yinfan was brave and capable.

He is a strategist, eloquent, well versed in laws, and loyal enough to "Cao Wei".

Cao Rui secretly summoned Yinfan and ordered him to falsely surrender to Wu and seek the position of Tingwei. He waited for opportunities to frame him, alienated Wu ministers, and provoked internal strife.

In February of that year, Yinfan crossed the river at night to "defect" and defected to Soochow.

When they first entered the land of Wu, Yinfan did not attract Sun Quan's attention and did not arrange any official positions. Seeing this, Yinfan recommended himself and wrote to Sun Quan. In addition to expressing his dissatisfaction, he also put forward many interesting suggestions on justice, law enforcement and other aspects.

Constructive improvement strategies.

Soon after the letter arrived, Sun Quan invited Yinfan into the palace. Yinfan got straight to the point, analyzed the situation, pointed out the shortcomings, and proposed countermeasures one by one. Sun Quan fell in love with him at first sight. The next day, he appointed Yinfan as the imperial eunuch.

A group of ministers from the Eastern Wu Dynasty saw that Yinfan was favored by Sun Quan, held an important official position, and was young and promising. They all came to make friends. For a time, the front of Yinfan's house was busy with traffic and guests almost every day. It was very lively. But Yang Fan and Yang Di , Pan Jun and other officials have always been wary of Yinfan and insisted on not communicating with them.

In the ninth year of Jianxing (231), Sun Quan, who had repeatedly benefited from spy wars, repeated his old tricks. He ordered Zhonglang's general Sun Bu to pretend to surrender and deceive Wei general Wang Ling. Wang Ling was fooled and led the army to meet Sun Bu. Sun Quan deployed heavy troops to Ambush Wang Ling. Seeing that the situation was urgent, Yin Fan immediately rebelled and wanted to lead his troops to escape to stop Wang Ling. Due to the haste, Yin Fan was arrested and was beheaded by Sun Quan soon after in public display. Cao Rui failed and the carefully laid chess pieces were removed. .

The fourth spy war was also initiated by Cao Wei.

In the first year of Jiaping (249), Cao Shuang was executed by Sima Yi after the Gaoping Ling Incident. He was usually very close to Cao Shuang, and Wen Qin, who was the champion general at the time, was frightened. In order to show his loyalty to Sima, Wen Qin was heartbroken. One plan. In the second year of Jiaping (250), Wen used the excuse of being persecuted by the Sima family, so he sent someone to cross the river with a letter and surrendered to the camp of Wu general Zhu Yi, falsely claiming to surrender.

Wen Qin's wishful thinking was to lure Zhu Yi to lead his army to greet him through a fake surrender, and then attack him in the middle. Anyone with a discerning eye would know at a glance that this was completely "plagiarizing Soochow and plagiarizing Zhou Li".

Zhu Yi saw through Wen Qin's plan at a glance. So, Zhu Yi "expressed Wen Qin's letter to Sun Quan because it was a forgery", while at the same time he was preparing to use his horse and troops to implement the plan. Wen Qin saw the Wu army sharpening their swords and was already prepared, so he had to give up. The plan went bankrupt.

The same is true of Yongjian. Why was Cao Wei completely defeated and Soochow Wu completely victorious?

Ma Su summed up three reasons.

First, the sophistication of the strategies is different. Both Soochow times were carefully planned and coordinated by many parties, striving to be realistic and reasonable.

On the other hand, Wei Guo was not too careless. He was not calm enough the first time and simply copied the situation the second time.

In this way, it is strange to be successful.

The second is empiricism. When Cao Cao sent his troops south, Liu Cong, who was the herdsman of Jingzhou at the time, heard the news and surrendered. Cao Cao captured Jingzhou effortlessly. From this, Cao Cao believed that Sun Quan of Soochow would follow in the footsteps of Liu Cong, the herdsman of Jingzhou. He surrendered, but Sun Quan refused to surrender. Therefore, Cao Cao pinned his hopes on Sun Quan's subordinates, thinking that under heavy pressure, some of Sun Quan's generals would definitely have second thoughts towards Sun Quan. Therefore, when Huang Gaifa came to surrender When he wrote the letter, Cao Cao didn't think much about it and believed it to be true. In the end, he was deceived. The same was true for Cao Xiu when he was deceived by Zhou Fang. Before Zhou Fang's false surrender, two generals from Soochow had successfully surrendered to Cao Xiu, so Cao Xiu took it for granted. I thought it was logical for Zhou Fang to come to invest this time, but he fell into the trap and was defeated.

Third, the psychology is different.

According to common sense, the weak side surrenders to the strong side. Among the Three Kingdoms, the comprehensive national strength of Cao Wei's side is significantly higher than Soochow, so the strong Cao Wei's surrender from the weak Soochow is psychologically easier to understand and accept, and projected to In terms of actions, it is shown to be careless, neither using brains nor taking heart, adhering to the principle that everyone who comes is a guest, in order to show the magnanimity and magnanimity of a great country, and then achieve the purpose of winning over and winning people's hearts.

On the contrary, the weak side often finds it difficult to understand and accept the surrender from the strong side, and will always have countless question marks in their hearts. When projected into actions, it manifests as being cautious and always looking at it with suspicion.

These surrenderers even placed spies around the surrenderers, which made it difficult for those who pretended to surrender to escape even if they could escape temporarily.

…

Seeing that Ma Su was silent for a long time, Zhuge Liang asked: "You often know why?"

Ma Su actually had the answer in his mind, but he pretended not to understand and asked, "Please give me some advice, Prime Minister."

Zhuge Liang turned his head and looked at the white clouds in the sky, and said eloquently: "Those who are good at calculating people are quick to perceive; those who are good at attacking are quick to act. With the nature of the monarchs and ministers of Dongwu, they will do anything for their own benefit.

Breaking the alliance and surrendering to Wei are as common as drinking water. How can you believe those who surrender from either side? No matter how perfect your story is, he will not believe it from the bottom of his heart."

"So, how can an undercover agent succeed?"

Hearing this, Ma Su's expression changed drastically, and he finally realized what he was worried about.
Chapter completed!