The bamboo slips and the hand they were holding kept trembling, and Sima Yi couldn't believe what his eyes saw:

Xi Zhicai, the man who was regarded as his mentor, was actually killed...

In addition to sadness, Sima Yi found that although the signature and the one at the top of his head were deliberately altered, the vaguely visible word "Uncle" in the signature seemed so familiar to him, as if he had seen it before, but he could not think of it for a while.

Guo Jia walked to Sima Yi, bent down and gently took away the bamboo slips from Sima Yi's hand, turned around and put them back on the table.

"Do you know who it is..."

Before Sima Yi finished asking, Guo Jia cut off his question in his rare and stiff tone:

"This matter has nothing to do with you. I will naturally find out about the opera master's affairs. Don't interfere in it."

Faced with Guo Jia's secretiveness about Xi Zhicai, Sima Yi was even more convinced that there was a great inside story or even a conspiracy. He could not completely compare Xi Zhicai's death with his choice.

"If you go to investigate alone, you will inevitably be murdered by those people. Do you want to be the second drama master?"

Sima Yi's words hit the nail on the head, Guo Jia gently shook his pale and dry lips and smiled:

"Since you know I'm already in danger, don't get involved."

Although Guo Jia smiled at him, Sima Yi could see from his eyes that Guo Jia was warning him rather than persuading him.

After leaving Guo Jia's camp and returning to Liu Xie's tent, Sima Yi almost said a word. Seeing that he looked worried, Liu Xie stepped forward and asked, "Zhongda, what happened?"

"Your Majesty, I'm fine."

He shook his head, but still did not dispel Liu Xie's doubts. Seeing that he was unwilling to say something, Liu Xie couldn't ask more details, so he just patted Sima Yi on the shoulder to comfort him: "Maybe I can't help you, but you can tell me at any time."

Looking up at Liu Xie, Sima Yi smiled comfortably, and reached out to pat Liu Xie's hand on his shoulder.

Yuan Shao approached Guandu and built a camp dozens of miles from east to west with sand and stone. Their grand momentum was to take Xudu straight.

Such a huge formation was something that no Cao army soldiers had seen before, and the Cao army soldiers were quite timid because of this.

In September of the fifth year of Jian'an, Cao Cao personally led his troops to attack Yuan Shao in order to boost morale.

Yuan Shao heard the news and sent Zhang He to fight. The two armies met ten miles south of Yangwu. Cao Cao's general Zhang Liao rushed straight to Zhang He's troops. Zhang He fought with him in front of the two armies. The two fought hard for a long time but did not distinguish between the two.

Cao Cao discovered that Zhang He's bravery was indeed as rumored as he should not be underestimated, so his love for talents gradually arose.

Zhang Liao raised his sword and slashed towards Zhang He's head. Zhang He raised his spear and held the sword in Zhang Liao's hand. He swung the spear head and stabbed Zhang Liao's head. Seeing this, Zhang Liao tied the reins and raised his horse's hooves, forcing Zhang He to withdraw his gun and avoid it.

"What a domineering marksmanship!"

Regarding Zhang He's superb martial arts and gun skills, Zhang Liao knew that in addition to the Qinglong Yanyue Sword in Guan Yu's hand, who fought with him for two hundred rounds, he had no chance of victory or defeat, he was the only one in the Red Fei Feathered Snake in Zhang He's hand in front of him.

Zhang He, who had not met his opponent for a long time, was deeply impressed by Zhang Liao's courage. He held a cold gun and bowed:

"General, you are polite. Today's battle may be difficult to distinguish, and Zhang He has not encountered a general-like enemy for a long time."

Suddenly, there were shouts of killing from the left and right sides of Cao Cao. After a while, Gao Lan and Jiang Qi's men rushed out from the east and west sides and headed straight for Cao Cao.

Seeing that he was ambushed, Cao Cao quickly turned his head and prepared to withdraw his troops. Unexpectedly, Wang Mo's men had already detoured to Cao Cao's rear. The iron barrels surrounded on all sides made it difficult for Cao Cao to retreat safely, so he ordered the soldiers to cover up and fight out.

Because Zhang He's pre-scheduling Cao Cao lost hundreds of people he brought out this time, he was almost caught by the pursuers and was captured alive. Fortunately, Li Dian's troops arrived in time to cover him before he survived.

After returning to the Guandu camp, Cao Cao was still a little scared. He thought that the generals under Yuan Shao were all brave and arrogant, and they were all famous. He never thought that the leader of the "Hebei Seven Dragon Spear" was so scary. He couldn't help but feel a little scared.

After this small defeat, Cao Cao was much more cautious and had no intention of attacking rashly. He just stood in the territory.

In order to shock Cao Cao, Cao Cao adopted Xu You's strategy to build a row of bows and arrow towers and shoot down at Cao's camp. Many soldiers of the Cao army were injured and injured. Several arrows even shot into Liu Xie's camp, and one of them was nailed to the wooden stake next to Liu Xie.

Sima Yi was very angry when he saw this, and he wondered whether he could fight back.

But Yuan Shao had already taken the lead in building the tall feather arrow tower, and it was too late to learn from it.

At this moment, a sketch about the equipment suddenly flashed in his mind, and this sketch was the drawing that the young man had drawn in front of him when he was recuperating on Pingding Mountain...

Sima Yi was curious as he looked at the thing the boy was painting on the white silk and asked, "What is this?"

The young man pointed at Baibo and explained in detail to Sima Yi the equipment drawn on the drawing:

"I thought of this thing from my spare time. I haven't figured out the name yet, but it has a great effect. With the help of thick ropes and round wheels between the horizontal bars and the vertical bars, it can easily project huge stones with two people, which have infinite uses for siege or urging villages."

"Projecting a stone?" Sima Yi smiled and said, "Isn't the shocking scene that day shaking the earth like a thunderbolt?"

"thunderbolt?"

The boy pondered for a while, then waved his pen and wrote the three words "Pili Car" on the white silk:

"Then call it Pili Car."

Recalling the scene, Sima Yi hurriedly found a stack of white silk to spread it on the table, then pinched the pen with his right hand and closed his eyes as if he was trying hard to recall something. Liu Xie saw Sima Yi's expression so serious, so he walked up to ask:

"What's wrong with Zhongda? You..."

Before he could finish speaking, Sima Yi stretched out his left hand and signaled Liu Xie not to interrupt his thoughts.

The composition of the Pili Cars drawn by the boy in the past slowly emerged in Sima Yi's memory. Sima Yi quickly wrote on the white silk with his memory, and soon revealed the structure diagram of the Pili Cars in his memory to the paper.

After finishing the painting, Sima Yi put down his pen and held the white silk in both hands and breathed a long sigh:

“Luckily I still remember…”

Liu Xie leaned forward and looked over. He had never seen such a tool before, but couldn't help asking curiously:

"This is..."

Sima Yi did not answer him, but said with a smile:

"Your Majesty no longer has to worry about Yuan Shao's sharp arrow shooting into your tent. Next, I should give it back."

At this time, Cao Cao was worried about Yuan Shao's shooting in recent days, and his military morale seemed to have been shaken. He asked what should the two military advisors, Guo Jia and Xun You. Both military advisors remained silent, and it was difficult for them to think of a solution in a short period of time.

Just when they were at a loss, they ordered them to report outside the tent: "Report to the lord, Sima Yi is here to pay a visit."

For some reason, Guo Jia began to laugh at himself when he heard the words of the order. Cao Cao and Xun You were confused:

"Why did Mr. Fengxiao laugh?"

Guo Jia replied: "Mr. Cao, what you are worried about will be resolved soon."

Cao Cao instantly realized that what Guo Jia was referring to now was not anything else, but Sima Yi outside the tent.

After Xuan Sima Yi entered the tent, Cao Cao asked him directly: "What's the matter with Zhongda?"

"I have thought of how Yuan Shao shot at our military camp many times in recent days, and I have already thought of a way to crack it, so I will report it."

Everyone was shocked when they heard Sima Yi's words. They could hardly believe that what Sima Yi said was true.

Especially Cao Cao, it was hard for him to imagine that even Guo Jia and Xun You could not solve the problem. This young boy was able to say such a shameless saying.

Despite this, Cao Cao still suppressed his emotions, but the light of hope ignited in his eyes could not escape Guo Jia's eyes:

"Since Brother Zhongda has a law that can be broken, don't keep it in a silence. Please tell me in detail."

Sima Yi took out a stack of white silk from his sleeve and walked to Guo Jia to hand it to him. Guo Jia looked at Sima Yi, as if he had read a lot of confidence from his eyes, so he calmly took the white silk and spread it in his hand. His eyes suddenly changed:

"Such a crisis can be solved..."

After hearing what Guo Jia said, Cao Cao was even more curious about what was in the stack of white silk. Xun You also hurried forward to watch it. When he saw the design drawing of the Pili Car, he could not help but praise Sima Yi:

"It's such a strange talent!"

The two top military advisors praised Cao Cao so much. He got up and quickly walked to Guo Jia's side and reached out to take Baibo and saw the composition of the Pili Car. Cao Cao, who had a clear vision, could see at a glance that the Pili Car was the best way to deal with the arrows:

"I didn't expect you to know how to make equipment. I really underestimate you."

Sima Yi bent down and explained, "This thing was painted by a friend of mine back then. Today I just borrowed flowers to offer Buddha."

No matter what, the emergence of the thunder chariot greatly solved Cao Cao's urgent need, so Cao Cao didn't care who created it by mistake. He hurriedly ordered the skilled craftsmen in the army to make the woods based on the surrounding forests.

The next day, it was getting brighter and the reinforcements standing on the arrowheads had not yet woken up, and they heard the sound of heavy objects moving in Cao camp opposite. When they rubbed their sleepy eyes and then Weichen, they saw through the mist that the huge wooden weapons had already been erected on the other side, and before they could tell what they were, they heard the order from the guards on the opposite side:

"put!"

Hundreds of huge rocks cut through the sky and smashed into Yuan Shao's camp. Soon, many arrows that Yuan Shao had worked hard to build were smashed. For a moment, the dust was raised, but it was difficult to cover up the wailing sound of Yuan Shao's archers in the dust.

Seeing that Cao Cao had made such powerful equipment, Yuan Shao knew that he would not be able to match it in a short period of time, so he hurriedly ordered the military camp to retreat fifteen miles, thus avoiding the attack range of Cao Cao's thunder chariot.

Although the two armies suffered casualties, Yuan Shao was obviously slightly inferior to Cao Cao after this game, and his morale was even more shocked by what the reinforcements called "the meteorite from the sky", and his fighting spirit was greatly reduced.

Afterwards, the war was in a stalemate, and as Liu Xie had lost the role of boosting morale, Cao Cao sent someone to escort Liu Xie back to Xu County. Sima Yi considered that the outcome would be unpredictable if this continued, and for safety concerns, he also urged Liu Xie to leave.

Before leaving, Liu Xie wanted to persuade Sima Yi to return to Xudu with him. Sima Yi held Liu Xie's hand and said:
Chapter completed!