When Fa Zheng came to Jingzhou, he only served as a military lieutenant with Liu Zhang, and because of his close relationship with Zhang Song, who served as a special driver, he was recommended to Jingzhou to meet Liu Bei and serve as an envoy to invite Liu Bei into Sichuan.

Zhuge Song was not present at the scene when Zhang Song presented the picture because of his own rank, but he knew that these two people had been plotting to support Liu Bei as the lord of Yizhou since Zhang Song returned to Shu from Jingzhou.

Fa Zheng is good at intrigue in history, and once offered a plan to kill Xiahou Yuan, and Liu Bei has always trusted and respected him after entering Shu. However, just because his talents were not reused, he and Zhang Song sold Liu Zhang, who gave them a fortune to support their family, Zhuge Song was very unimpressed.

Of course, Liu Bei will not alienate Fazheng because of Zhuge Song's attitude, and Shu is an important foundation for Liu Bei to dominate the world. So in the sixteenth year of Jian'an, in the winter of 211 AD, Liu Bei listened to Zhuge Liang's suggestion, left Kong Ming, Guan Yu, Zhang Fei, Zhao Yun and others to guard Jingzhou, and took Pang Tong, Huang Zhong, Wei Yan, Chen Zhi and Zhuge Song and 15,000 soldiers from the four counties who had been trained in Nanjun for a long time, plus 500 Zhuge Song's personal soldiers and nearly 20,000 4,000 recruits trained by him, and marched towards Shu in a mighty way.

Before leaving, Zhuge Song couldn't help but be reluctant to give up with Qing'er, and went to Kong Ming's residence to say goodbye to Huang Yueying. Mrs. Zhuge said a lot of caring words to Zhuge Song, and slightly complained that Kong Ming let Zhuge Song go on adventures at such a "young" age. In this regard, Zhuge Song could only laugh in addition to feeling it.

After a few days of the departure of the army, the army arrived at Yiling to rest temporarily, Zhuge Song privately asked Pang Tong about one of his doubts about this trip: that is, since ancient times, the army has been 50,000 to say 100,000, 100,000 to say 200,000, why this expedition only said that there were 20,000, not to mention some of the momentum to strengthen their own side?

Pang Tong replied with a smile: "Liu Jiyu ignored the opposition of the ministers this time to invite the lord to enter Shu, one is the work of Zhang Song and Fa Zheng, and the other is that there is indeed Cao Cao and Zhang Lu. At this time, although the lord was able to enter Shu, but the meaning of vigilance in Shu is very deep, although Liu Zhang pretended to be sincere, but he may not suspect the lord, and there are not many soldiers, at this time, if we claim to have 50,000 troops into Shu, Liu Zhang is uneasy not to say, Cao Cao and Sun Quan will also think that Jingzhou is empty and fight our idea. 20,000 people, no more, no less, just right, can not only dispel Liu Zhang's doubts and make him think that we are all under his control, but also make Cao Cao and Sun Quan think that we still have heavy troops in Jingzhou and dare not act rashly! ”

Although Zhuge Song knew that in the end, he relied on the second wave of Jingzhou soldiers to attack from outside in history, and only then did he cooperate to take Shu, but that was also because after the situation of Pang Tong's death deteriorated, this time he had his own companions, and he would not let Pang Tong be shot to death on Luofeng Slope, so after listening to Pang Tong's words, he still felt quite reasonable.

Because this place of Yiling is still far away from the White Emperor and not close to Nanjun, Liu Biao has never had the ambition to conquer Shu, and Liu Zhang has no intention of going out of Sichuan, so since Liu Biao's time, this is not a place to set up heavy troops.

Although this place now nominally belongs to its own territory, there are only a few hundred soldiers belonging to Liu Bei in Yiling City, who play the symbolic meaning of guarding the frontier.

However, because Zhuge Song personally knew the importance of Yiling in the history of the Three Kingdoms, after listening to Pang Tong's words, he still encouraged him to invite Liu Bei to go to the city wall with him.

Since Liu Bei's army had already marched for a whole day before arriving at Yiling, the soldiers, including Liu Bei, were very tired. However, Pang Tong's invitation to Liu Bei is still very face-saving, and now there is still a period of time before the sun sets, and the three of them stand on the small head of Yiling, looking at the layers of mountains and dense forests in the direction of Shu, and they can't help but feel that it is difficult to enter Shu.

Yiling is one of the birthplaces of Bachu culture, the Spring and Autumn Period and the Warring States Period is the Xisai important place of Chu State, when the Qin general broke the Chu soldiers, there was a fire to Yiling. At this time, the three people who accompanied the army introduced: "Yiling is located in the middle and upper reaches of the Yangtze River, belongs to the transition zone of the mountains of Shu to the Jianghan Plain, the land is choked into the throat of Sichuan and Jing, the upper control of Bashu, the lower lead Jingxiang, the water is here and the Yi, the mountain is here and the mausoleum, so it is called Yiling." And the meaning of the water is here, and the meaning of the mountain is here, that is, from Shu to here, the mountain becomes a small hill here, and the water is here to turn the danger into a disaster. ”

Zhuge Song looked at the mountains in the distance, and then looked at the city wall under his feet, thinking that after a long, long time, in history, Liu Bei would be blocked here because of avenging Guan Yu, and the whole army would be blocked here, unable to advance, and unwilling to retreat, so that Lu Xun burned most of the chips for dominating the world. At this time, Liu Bei and Pang Tong, who boasted of superior wisdom, were completely ignorant.

Once upon a time, Zhuge Song fantasized countless times in modern times that if Pang Tong did not die in Luofengpo, but went out with the army, he would never fall for Lu Xun's fire plan. But there are many things that are not ifs, if Pang Tong really does not die, Jingzhou has Kong Ming in charge, and it is estimated that it will not be lost, and there will be no so-called battle of Yiling later.

However, even though Zhuge Song had already made up his mind in his heart that he would definitely avoid Pang Tong's death, inexplicably, he still wanted to say something to Liu Bei here.

Thinking of this, Zhuge Song waved his hand to the guide and let him go down, convinced that there were only himself, Liu Bei, and Pang Tong around at this time, and the guards were not as far away as they could hear their words, so he arched his hand to Liu Bei and said: "Lord, Song'er has a question, I want to ask you!" ”

Liu Bei was in a good mood at this time because of the imminent entry into Shu, and replied with a smile: "What do you want to ask?" Pine? But it doesn't hurt to say! ”

Zhuge Song carefully thought about the wording in his heart, and then said to Liu Bei: "Lord, you also heard the words of the guide just now, since this place is so important, according to Song'er's opinion, more people should be left to garrison, when I entered the city, I noticed that the defenders here are only a few hundred, which is completely incompatible with the importance of this city's residence, according to Song'er's opinion, how can a loyal general be sent here to lead 3,000 soldiers to guard!" ”

Liu Bei listened to Zhuge Song's words, and did not express his position directly, but kicked the ball to Pang Tong: "Master Pang, what do you think of Song'er's words?" ”

Pang Tong said such a sentence almost without thinking: "If the lord is trapped and guarding Jingxiang, then there must be 3,000 people here, and if the lord is determined to be in the world, then there are more than 300 people in this city!" After speaking, he and Liu Bei looked at each other and laughed.

Liu Bei's statement on Zhuge Song's proposal was self-evident at this time, but he patted Zhuge Song's shoulder and said to him with a smile: "Song'er, do you think I still want to leave three thousand soldiers here?" ”

At this time, Zhuge Song could no longer be stupid enough to insist that Liu Bei strengthen his armaments here, he sighed secretly in his heart, his mind was racing, and he decided to use another method to say something to Liu Bei. Zhuge Song first pretended to be enlightened, and said to Liu Bei: "In this way, there are enough three hundred soldiers in this city!" Then he turned the conversation to ask Pang Tong for advice, and he pointed to the mountains to the west and said to Pang Tong: "Master Pang, my husband has something to tell me before I leave. ”

"What does Kong Ming tell you?" As soon as he heard what Kong Ming said to Zhuge Song, Zhuge Song found that Liu Bei and Pang Tong both suddenly restrained their smiles and became serious. He remembered that Pang Tong had told him when he visited him for the first time that Kong Ming might have sent him to take credit for him and Pang Tong, and he couldn't help but laugh secretly, thinking that Liu Bei and Pang Tong must be thinking about this aspect at this time. However, what Zhuge Song wanted to say to Pang Tong had nothing to do with it at all, he pointed to the mountains and dense forests in the distance in a very humble tone and said to Pang Tong: "Before leaving, my husband instructed me to use troops in every place during the days when I was with the army, and I should think carefully about it as a place where our army and the enemy fought according to the topography of this place, and ask you for advice!" ”

Liu Bei was very surprised when he heard this, while Pang Tong had a stunned expression for a moment, and he looked at Zhuge Song with a strange expression, as if he had turned into Kong Ming in an instant. For a long time, it wasn't until Zhuge Song avoided his gaze very uncomfortably and wanted to run away that Pang Tong sighed and said to Zhuge Song: "Okay! In that case, what do you want to ask me for now? However, if there is an enemy army in front of you to hold the danger, how can our army attack Shuzhong with a force that is not stronger than the enemy? ”

Pang Tong's words are very relevant to Liu Beijun's current environment in Shu, Liu Bei also looked at Zhuge Song with a very expectant expression, obviously he also wanted to hear Zhuge Song ask if he didn't use the internal and external strategies at this time, but attacked Shu, what would Pang Tong do.

It's a pity that for a person who has been haunted by the battle of Yiling, he is not interested in the strategy of how to storm Shu now, Zhuge Song said to Pang Tong: "No, no, what Song'er wants to know is that if the two sides are equal in strength, and the enemy uses Yiling City as the central support area, and builds an extremely strong camp in the mountains and dense forests in front, our army marches from Shuzhong to Jingxiang, how to break through here and reach Nanjun?" ”