Cao Cao has always been known for his meticulous work and scheming, this attack on Xuzhou, Cao Cao planned for a long time, Guo Jia led the think tank also participated, Cao Cao for this military operation to do his best, its careful process is far more rigorous than the attack on Hebei, all the plans have been repeatedly weighed and carefully considered, it can be said that every step of Cao Cao is foolproof. The first stage was a perfect record, which undoubtedly made Cao Cao's confidence extremely bursting, but the defense of Xiapi City was beyond Cao Cao's expectations, and the unexpected appearance of artillery made Cao Cao extremely mad, and Cao Cao even beheaded the scout captain to investigate the scout's dereliction of duty.

In fact, the death of this scout captain was really unjust, even if Cao Cao saw these inexplicable iron guys who had never seen it with his own eyes, it was impossible for anyone to know what it was used for until it was used. However, Cao Cao, who had never needed a reason to kill, was furious and beheaded the scout captain, but no one was surprised.

Xuzhou City is in front of you, but Cao's army seems powerless, which makes Cao Cao, who is full of confidence, suffer a blow, the war drags on for one more day, Cao Cao's temper becomes more and more irritable, once came to the front line in person, commanding the siege operation, and Cao Cao's command position, day by day closer to the city.

Guo Jia was very worried, the Jing army's artillery is amazingly powerful, once hit, it is difficult to have a chance of survival within a radius of one zhang, Guo Jia in the consideration of Cao Cao's safety, persuaded and said: "Liu Jun's firearms are very powerful, the lord must not personally try the danger, it is better to stay away from the city wall." ”

Cao Cao said disapprerovingly: "Feng Xiao is too worried, Liu Ze's firearms are powerful. But the range is also limited, but it is only two or three hundred steps more than the trebuchet, and one thousand and five hundred steps away, which is where it is beyond its reach, and the position we are in is very safe, and the soldiers who are besieging the city, if they are not alone here to supervise and command, how can they inspire morale? A few novel weapons just want to intimidate my army of hundreds of thousands. Isn't Liu Ze a pipe dream. In the opinion of the lonely. The firearms were no more than Erle, and although they were powerful, they were fired at a long interval, longer than the interval between trebuchets. If it weren't for the high walls of Xiapi City. The officers and men of our army rushed up. It's enough to destroy it. ”

Guo Jia said worriedly: "Although this firearm does not do much damage to moving targets, it can hit a bulky, large and slow-moving target like a trebuchet, and wants to break through the strong Xiapi City. Without trebuchets waiting for a large amount of siege equipment, it is difficult to capture the fortified city just by relying on the ant-attached method of the soldiers. ”

Cao Cao had a resolute face, and said in a deep voice: "If you are united, ten thousand people will die, why worry that Xuzhou will not be broken!" As he spoke, Cao Cao ordered the Chinese army to move his cover forward more than 100 steps, and the big "Cao" banner was waved in the wind to boost the morale of the soldiers.

Although Cao Bing's morale was boosted, Zhang He also saw Cao Cao's position clearly, and it was no wonder that Cao Cao's Wei King was too conspicuous and ostentatious.

In the past few days, Zhang He has specially controlled the firing range of the red-coated cannons, strictly limiting the maximum range to between 1,000 and 1,300 steps, and absolutely not allowing more than 1,500 steps.

Zhang He did this, naturally he had his purpose, that is, to confuse Cao Cao, so that Cao Cao mistakenly thought that the range of the red-clothed cannon did not exceed 1,500 steps, but in fact, the effective range of the red-clothed cannon even exceeded 2,000 steps.

These gunners have undergone strict training, and their accuracy has been greatly improved, and if they want to hit a fixed target within a range of 2,000 steps, they are at least ninety percent sure, not to mention that the requirements for this artillery bombardment are not so absolutely strict, as long as they can hit a range of a few feet around Cao Cao, Cao Cao is in a catastrophe.

Sure enough, Zhang He's calculation was good, at the beginning Cao Cao's vigilance was very heavy, and he was not close to the range of 2,000 steps under the city at all, but after a few days, Cao Cao's vigilance disappeared little by little, he mistakenly thought that the range of artillery was limited, so he did not think it was prepared, Luan drove closer and closer to the city day by day, and had entered the effective range of artillery.

Zhang He made a quick decision and decided to order the gunner to aim at Cao Cao and shoot a flowering bomb to kill Cao Cao in one fell swoop.

After the gunner was ordered, he immediately loaded the barrel with gunpowder and flowering shells, readjusted the elevation angle of the shot, and after firing, the shells whistled out of the muzzle of the cannon, drew a graceful arc, and shot towards Cao Cao's foothold impartially.

From the muzzle of the cannon to the ground, it was just a short breath of time, even if Cao Cao wanted to escape, it was absolutely difficult to have a chance, and Cao Cao's eyes did not look at those muzzles at all, just urged the soldiers to fight bravely, and when he found a cannonball whistling towards him, he couldn't help but be shocked, but if he wanted to escape, I am afraid it was too late.

Guo Jia's eyes did not leave the muzzles of those cannons, he thought about something again, and saw a cannonball falling towards this side, he was originally weak, but in a flash burst out of amazing power, pushed Cao Cao away, and threw himself on Cao Cao's body, shouting: "Lord be careful!" ”

The flowering bomb exploded only six feet away from Cao Cao, a huge rumbling sound sounded in Cao Cao's ears, shaking his eardrums buzzing, dust splashing, covering Cao Cao's head and face, Cao Cao hurriedly moved his lower limbs, found that he was not injured, and his mood was a little calm, at this time Guo Jia was lying on Cao Cao's body, Cao Cao reached out to help Guo Jia, and said, "Fengxiao, are you okay?" ”

Guo Jia's face was pale, his eyes were closed, Cao Cao was shocked, he reached out and touched it, there was a blood stain on his back, Cao Cao secretly screamed badly, and shouted for the guards to come over and urgently escort Guo Jia back to the camp.

Cao Cao understands that if Guo Jia hadn't given up his life to block it, and now he was hit by the projectile, it was himself, at the critical moment, Guo Jia disregarded his own safety and desperately rescued him, so that Cao Cao was moved to tears, Guo Jia is now unconscious, life and death are uncertain, it really makes Cao Cao anxious, and the best doctor in the general is transferred over to diagnose and treat Guo Jia, Cao Cao is not leaving an inch, guarding his side.

The doctor cleaned Guo Jia's wound and bandaged it, but he was helpless about Guo Jia's injury. Cao Cao hurriedly asked, "How is Fengxiao's injury?" (To be continued......)