Cao Cao stared at the map sent by Chen Lan and frowned tighter. After looking for a long time, he said, "Go and call Cheng Yu and Guo Jia."

Cheng and Guo were pulled out of the bed, and when they arrived at the coach's tent, they yawned all over. After asking the reason, Cheng Yu asked directly: "Chen Xiaoqi, how many soldiers, how many people, how much food and grass are there in the city?"

Chen Lan replied: "Reported to the envoy Cheng, Linzi City originally had a 40,000 army, and was guarded by Cen Bi, a general under Yuan Tan. Zhang Yun led another 20,000 cavalry, and currently has a force of more than 60,000."

"As for the people, there are still 200,000 yuan for the elderly, weak, women and children, and there is more food and grass. Zhang Yun's first order after taking over Linzi was to snatch all the food and grass around him at all costs and pile it up in the city for spare time. At present, the food and grass in the city is at least enough for more than 200,000 people to use for half a year."

"In addition, the envoy who asked Yuan Shao for help had already left. I wonder if the reinforcements would arrive?"

Cheng Yu's brows squeezed into the character "Chuan" on the spot and said, "Zhang Yun is determined to resist stubbornly."

Guo Jia said: "Where is the water source? Can you block the river entering the city..." Cheng Yu shook his head and said: "No, Qingzhou is close to the sea, with many rivers and more underground rivers, so it is impossible to block them at all."

Yes, the plan to surround three and one failed before it even started.

Zhang Yun completely blocked the city gates and built a new city wall at any cost. The reinforced concrete was too strong and the shells could not be blown away.

Even if the concrete is not steel bars, it is not easy to make bamboo and wood.

What's more, their shells are not enough.

Guo Jia thought for a long time before saying, "Lord, there is no other way, so he can only attack. Yuan Tan Xinpi in the rear caused a rebellion. In order to prevent the Liaodong artillery shells from being robbed, his subordinates suggested that Zhu Ming be transferred to the front line and make artillery shells on the spot."

"There are several kinds of sulfur saltpeter needed for shells, which is not difficult to find. There are raw materials nearby. Why should we go far and put the production line in Xudu? It's so troublesome to build things well."

Cao Cao slapped the table and said, "Yes, why didn't I expect it? I immediately sent an order to let Zhu Ming come to Linzi."

After saying that, he looked at Chen Lan and said, "You go down first and let the medical soldiers see their injuries and rest for one night. I will find a way to send you into the city tomorrow and tell you that the hundred households will burn the food and grass in the city at all costs. You can complete this matter within three days. Everyone in your hundred households will remember great achievements and will receive a heavy reward afterwards."

"Here."

Chen Lan was overjoyed and quit the tent.

Cao Cao smiled bitterly and stood up and said, "I'm tired, let's take a rest."

The night passed quickly.

As soon as the next day, Cao Anmin ran to Cao Cao excitedly and said, "Uncle, the tunnel has been dug through, nine tunnels have started construction at the same time. Others have encountered rocks and mud, and only one is unobstructed and dug all the way under the city wall."

"What are you waiting for?"

Cao Cao was overjoyed and said, "Take all the explosives packs over and blow them up for me in one breath. You can't drag them down any longer. If you drag them for a day, Zhang Yun's city wall will be stronger and we can't afford to consume it."

"Here."

Cao Anmin left with his fists.

Guo Jia didn't know where to shoot, so he followed him.

The two of them left the handsome tent, and took hundreds of Japanese troops, each carrying a pack of explosives and a wooden stick about meter long, walked into the tunnel and headed straight to the city.

The authenticity was five feet wide, and the group walked to the end easily. Guo Jia looked around and said, "Try making three explosive packs first, and use a wooden stick to press it against the top of the hole."

Cao Anmin said in surprise: "Why do you have to be so troublesome? It's so exciting to fry more than one hundred explosive packs together."

Guo Jia gave him a blank look and said, "I can't explain it clearly in one sentence or two, just do it."

Cao Anmin: "..." You are the uncle.

According to Guo Jia's instructions, he pushed the explosive bag with a wooden stick. After retreating a hundred meters away, Cao Anmin took the bow and arrow from his subordinates, lit the arrow and shot it out, hitting one of the explosive bags.

There were three loud bangs, and the earth trembled, and a lot of dust fell from the walls around the tunnel.

"Bao, bah..." Guo Jia vomited a few times, spit out the soil that accidentally fell into his mouth and said, "Same as before, continue."

At this time, the front is full of smoke and smell of gunpowder, and the choking people can't even enter. How can I continue?

It’s not difficult for anyone! After waiting for half a quarter of an hour, three Japanese troops stepped forward, and quickly retreated as usual as last time, and continued to shoot arrows and detonate.

One hundred and twenty explosive packs can be fried forty times according to Guo Jia's fried method.

Unfortunately, things went against my wishes. The tunnel collapsed completely after only 12 blows up, and all ten meters at the end were blocked, and they were almost crushed under the city.

Guo Jia was so choked by the smell of gunpowder that he coughed more than ten times in a row. After recovering, he spat a few more times and said, "I'll go out to see the situation outside. Please take someone to clean up this piece and continue to blow it up."

Cao Anmin: "..." You are so old, don't treat me as a human being.

Guo Jia was too lazy to pay attention to him, so he ran out of the tunnel and looked back. He saw a large area of ​​the city wall opposite collapsed. He ran to Cao Cao excitedly and said, "Lord, is it done?"

Cao Cao was also happy and said: "It is indeed effective. Jiang Yan, the red-clothed cannons are served. You don't need to fire them together, just one shot and one shot."

"Here."

Jiang Yan ran to the artillery position and adjusted the sight himself, and after adjusting it, he ignited the fire and shot it out.

The shells hit the city wall accurately, and a big hole was blown out with a bang.

Cao Cao put down his telescope and said, "Yes, just fight like this, continue to bombard."

Jiang Yan, deputy commander of the Mountain Brigade, strictly implemented his orders, and kept firing point-to-point. The gun barrel heated up and changed it to another. After firing thirty consecutive guns, the city wall finally collapsed.

Cao Cao picked up the telescope again and looked at the gap. He found that there was a newly poured cement wall behind the gap. His face looked bad on the spot. He ordered: "Let Cao Anmin continue digging and go straight to the new city wall."

The messenger agreed and saw Cao Anmin coming out of the tunnel before he left. He ran to Cao Cao and said, "Uncle, stop fighting. The tunnel was shaken by cannons. More than a hundred soldiers were buried under it. I dug up the soil for a long time before climbing out."

Seeing that he was covered in dust, Cao Cao's conscience had already been fed to the dog, and he comforted with a smile: "It's okay, work harder, I will agree to you whatever I want when Linzi City is broken."

What else can Cao Anmin say? He can only slander in his heart: "If Brother Xiu is here, are you willing to let him do this work? After all, my nephew still has no son to kiss me."

Cao Anmin retreated, and Guo Jia said again: "Lord, why don't you charge and try Zhang Yun's firepower?"

"OK."

Cao Cao agreed without much thought and ordered: "Dian Wei, lead a team of people to rush in along the gap, check the situation in the city, and send Chen Lan in by the way, Jiang Yan, bring the cannons and explosives, and continue to tear the gap into the gap."

The gap opposite was only two meters wide, and there were no people rushing in at one time. If you want to attack the city, you had to continue bombing.

With a command, Dian Wei rushed to the gap in the city wall with thousands of soldiers carrying ladders. Several shells were not yet approaching and shot out from the city. They exploded around him, and dozens of soldiers around him were blown into several pieces on the spot.
Chapter completed!