After being abandoned by Liu Bei, Cao Cao begged me to be a military adviser

Afterwards, Lao Huang invited the two of them into the hall to sit down.

Lao Cao was a little anxious, and asked Lao Huang, "Why, isn't your husband up yet?"

Lao Huang shook his head: "Master Ji doesn't know something. Last night, Lao Xu introduced the situation on the front line to our husband, and my husband has been tinkering with carpentry in the backyard!"

"Carpentry?" Lao Cao frowned, "Your husband still has this skill?"

"That's a must!" Lao Huang smiled: "My husband is versatile!"

As soon as he said this, Liu Xian came in from the backyard, holding a small wooden cart in his hand.

"Mr. Ziyu, what is in your hand?" Lao Cao's gaze was fixed on the small wooden cart in Liu Xian's hand.

"This thing can be exchanged for at least one hundred gold!" After Liu Xian finished speaking, he threw the wooden cart on the table.

Old Xu was shocked: "Is this thing worth a hundred gold?"

Lao Cao carefully picked up the wooden cart and played with it, but he didn't see any mystery.

Liu Xian introduced: "This thing is called a catapult. It was first produced in the Spring and Autumn Period, but it was gradually abandoned because it was too bulky and inconvenient to move. I improved it to make it lighter!"

Hearing this, Cao Cao carefully played with the model of the catapult, and even found a stone to test it, and the effect was astonishing.

Liu Xiandao: "You just need to send this thing to Cao Gong, and Cao Gong will order someone to build a catapult. When Yuan Jun comes to shoot arrows again, he can use the catapult to fight back!"

"Hahaha!" Lao Cao laughed loudly: "Miao!"

Old Xu also laughed: "Yuan Jun's tall building on the earth hill cannot be moved, it is a target!"

"Master is so powerful!" Cao Pi who was standing at the door couldn't help but sigh.

Liu Xian smiled: "Master Chicken, do you think this thing is worth a hundred gold?"

"It's so worth it, it's worth the money!" Lao Cao nodded again and again, smiling from ear to ear.

Liu Xian said: "Then the deal is considered a success!"

Old Cao frowned when he heard this, the military and state affairs, this kid actually regarded it as a business?

This is no one else!

Chapter 38

Although Lao Cao was very against Liu Xian's profiteering behavior.

But I still love the catapult model in my hand.

The problem that had been a headache for several days was solved as soon as Liu Xian arrived.

Cao Cao found that he had already developed a certain dependence on Liu Xian.

"Brother Ziyu, I have nothing to do, I'm leaving first, I'm in a hurry to report to Cao Gong, and I'll have a drink with you later!"

After Lao Cao finished speaking, he got up and left.

"Master Chicken, wait a minute!" Liu Xian quickly grabbed Lao Cao's arm: "Did the strategy of the food transport team be used last time?"

"Use it!" Lao Cao nodded: "Mr. Cao is very satisfied!"

"Hahaha!" Liu Xian smiled, turned his head and said, "Did Lao Huang hear that? Mr. Cao is very satisfied!"

Lao Huang also laughed: "Then Mr. Cao is satisfied, and rewards must be indispensable!"

Old Cao: "???"

"Master Ji, you can't take the reward all by yourself!" Cao Pi also took the opportunity to insult his father.

Since you always like to pretend, I will also play with you.

Anyway, I, Cao Pi, are now Liu Xian's apprentice.

Lao Cao looked at this son who was so stingy in shock, then looked at Liu Xian, and smiled helplessly: "Mr. Cao has not had time to reward him in the future, but there must be something in the credit book. After winning the battle, he can get the reward!"

Liu Xian frantically winked at Lao Huang.

Lao Huang grabbed Lao Cao's arm: "Master Ji, why don't you pay in advance? We are all from our own family!"

Old Cao: "I..."

Cao Pi: "Master Ji has a money bag on him!"

Lao Cao lowered his head and looked at his waist, suddenly he had nothing to say.

After taking the initiative to throw the money bag on the table, Lao Cao left Huangsha Village.

On the way back to Daying, Cao Cao asked Xu Chu, "How is Cao Pi now?"

Old Xu smiled awkwardly: "Prime Minister, Mr. Pi is a child after all, and now he is angry with you!"

"What the hell, how can I have such a son?" Cao Cao shook his head helplessly.

After returning to Guandu Daying, Cao Cao handed over the catapult model to Cao Ren and ordered him to build ten catapults overnight.

Cao Ren stayed up all night and led thousands of soldiers to finally complete the improved version of the catapult.

At dawn, accompanied by the crowing of roosters, Yuan Jun soldiers boarded the earth mountain.

Started their new day's shooting mission.

There is no difference, no dead angle, and then shoot bows and arrows into Cao Ying.

Soldiers will also compare and show off their achievements yesterday.

However, to the surprise of all Yuan Jun's soldiers, Cao Jun did not hide in the camp today, but formed a wall formation with shields, as if he was carrying something.

Cao Ren personally commanded in the school grounds, holding a small flag in his hand.

"Report to the general, all the catapults have been loaded with stones, and they have aimed at Yuan Jun's earth mountain!"

"Very good!" Cao Ren nodded in satisfaction, and raised the small flag high: "Launch!"

In an instant, ten catapults were launched together and smashed directly into the earth mountain.

"Tom tom tom!"

The flying stones smashed several Yuan Jun soldiers into the air on the spot.

"Hurry up, fight back!" The leader on the earth mountain ordered, and the soldiers fired bows and arrows to fight back at Cao Ying.

But this is of no avail to Cao Jun.

Both the catapult and the soldiers participating in the transportation of the catapult were all protected by shields, no matter how Yuan Jun shot arrows, they would not be injured at all.

Instead, the catapults threw stones on the dirt hill round after round.

Not only Yuan Jun's soldiers were smashed to death, but even the temporary pavilion they built was smashed to pieces.

In less than half an hour, half of Yuan Jun's soldiers were crushed to death.

When Guo Tu heard the news that he was on the dirt mountain, the flying stone almost broke his leg.

"Master Supervisor, what should we do now?" the leader of Tushan soldiers asked Guo Tu.

Guo Tu said loudly: "Retreat, withdraw, withdraw, withdraw quickly, everyone withdraw down the mountain, don't be a living target here!"

In this way, Yuan Jun's soldiers retreated down the earth mountain one after another.

Yuan Jun's bow and arrow, which had troubled Cao Jun for many days, finally disappeared.

Cao Jun's various ministries ran out to cheer.

Cao Cao, who was standing at the gate of the Chinese army's large tent, had a smile on his face.

"Prime Minister, this catapult is very easy to use, but after two or three hours, Yuan Jun was too scared to go up the dirt mountain!" Cao Ren looked excited, without any sleepiness.

"Hahaha!" Cao Cao laughed: "Build dozens more, keep an eye on the earth mountain for me, and never let any enemy go!"

"Obey!" Cao Ren cupped his fists and asked half a step forward, "Prime Minister, Mr. Cao Ji also invented this thing?"

"That's right, Mr. Cao Ji invented it!" Cao Cao nodded cheekily.

Cao Ren smiled: "This Mr. Cao Ji is really a god! When will you let the brothers meet this gentleman?"

"No hurry, no hurry, discuss after the war!" Cao Cao waved his hand, not daring to take the move head-on.

After all, it's hard to explain.

Cao Ji is a fictitious person, but the real planner is Liu Xian.

But Liu Xian obviously didn't want to serve in the army.

This matter is somewhat troublesome to operate.

On the other side, Yuan Jun's camp.

Yuan Shao looked very displeased, and stared at Guo Tu: "You said, Cao Cao has a catapult?"

"Yes!" Guo Tu nodded: "Cao Cao's catapults are very fierce. More than half of our soldiers were killed or injured. I'm afraid we can't shoot arrows to harass Cao's army anymore!"

Yuan Shao waved his hand: "What's so great about the catapult? He has me but doesn't have it? Build me a catapult, and then push it to the dirt hill to continue to harass Cao Jun!"

Guo Tu shook his head: "My lord, most of the catapults are heavy and heavy. Our army may not be able to build them in a short period of time. Even if they can be built, to push them up the dirt mountain requires not only rebuilding the road, but also transporting stones. It is as difficult as going to the blue sky!"

Yuan Shao's old face immediately turned dark.

Guo Tu said again: "Your Majesty, don't worry. The purpose of our army's shooting arrows in Tushan to harass Cao Ying is to cover the fact of digging tunnels. Now that the goal has been achieved, the next step is the tunnel battle!"

"Oh?" Yuan Shao's expression softened a little, and he asked, "How's the progress of the tunnel?"

Guo Tu smiled: "No accident, a unit of our army can appear behind Cao's army tonight, and 1 soldiers will gather behind Cao's camp in three days. By then, these [-] soldiers will enter Cao's camp and set fire If there is a commotion, my lord can take the opportunity to send out troops, and if we cooperate from inside to outside, we will definitely break Cao Jun's camp!"

"Hahaha!" Yuan Shao laughed loudly: "Okay, I'll wait for another three days to see!"

"My lord is wise!" Guo Tu cupped his fists to signal.

In the middle of the night, Yuan Jun soldiers were still working overtime to dig tunnels, and baskets of soil were transported to the dirt hill.

This scene was seen by Liu Xian who was several miles away.

With his wife not around, Liu Xian was sleepless late at night.

He simply took Lao Huang and Xiao Cao to the front line in the dark to see the excitement.

Of course, Liu Xian didn't dare to get too close, so he could only watch from afar.

Lao Huang asked: "Sir, why is this Yuan Jun soldier still transporting soil?"

"Yes!" Cao Pi also said, "I heard that General Cao Ren smashed hundreds of Yuan soldiers to death with a catapult. How dare he transport soil?"

Liu Xian shook his head: "It's not right! Yuan Jun has something wrong!"

"What's wrong?" Lao Huang and Xiao Cao looked at Liu Xian at the same time.

Chapter 39

Liu Xian pointed to the dirt hill in the distance: "Did you two smell it?"

Lao Huang shook his head: "Can you smell this?"

Cao Pi said, "Master, are you joking with us?"

Liu Xian smiled: "The wind blows from the direction of the earthy hills in the north, and the air smells like rotting wood stumps!"

Lao Huang closed his eyes and felt the smell in the air, then exclaimed: "It really is!"

Cao Pi also imitated Lao Huang's appearance and sniffed, equally astonished: "Master, is there any problem?"

Liu Xian said: "Yuan Jun's back is facing the Yellow River. If it is convenient to take soil from the river, it is convenient, so the earth mountain should have a fishy smell!"

Lao Huang nodded: "The rotting wood fragments should only come out from the deep underground soil far away from the river!"

"That's right!" Liu Xian nodded: "So I speculate that shooting arrows at piles of earth to harass our army is just one of Yuan Jun's strategies, and they are still digging tunnels in secret!"

Cao Pi suddenly realized: "It turns out that if the soil dug into the tunnel is used to build up a mountain, it will be difficult for our army to detect it!"

"Yes!" Liu Xian nodded: "According to the time calculation, Yuan Jun's tunnel should be opened!"

Cao Pi said excitedly: "But Mr. Cao is completely unprepared at this time. Once the enemy army gathers in the rear, if we come to cooperate from inside and outside, our army..."

Liu Xian said: "Go straight to Barbie Q!"

Cao Pi was puzzled: "What does Barbie Q mean?"

Lao Huang said: "That's the end of the calf!"