Under the city of Jinyang, in the camp of the Han army, Xu Chu and Gan Ning returned in vain, and after two days of tossing, they never found sulfur.

This made Zhang Yan a little annoyed, and he felt the scarcity of sulfur for the first time.

In fact, in China, sulfur ore has always been relatively scarce, and most of it relies on imports.

It's just that Zhang Yan doesn't know this.

Zhang Yan is a mercenary, he has limited knowledge and limited science, and he can't invent many things just because he comes to the next generation.

However, the ability to survive in the wilderness with gunpowder, guns, cannons, and all kinds of wilderness has always been his strong point.

According to the configuration method of black powder, Zhang Yan became the first person to invent gunpowder in this era, and this invention may also change the entire shijie. Because, gunpowder was used in warfare at least eight or nine hundred years in advance.

"Where's Zhang Liao?" Zhang Yan asked a little dejectedly.

"General Zhang hasn't come back yet......"

Zhang Yan waved at Xu Chu and Gan Ning and said, "Forget it, you are all tired for several days, hurry up and go down to rest." ”

"But Lord Regent, we can't make thunderbolts without brimstone, can we replace them with something else?" Xu Chu asked.

Zhang Yan shook his head and hurriedly sent Xu Chu and Gan Ning away.

In fact, it is not necessary to use sulfur to make gunpowder, but with the current scientific and technological foundation, it is impossible to make high-tech weapons at all, and only the most primitive methods can be used.

Just when Zhang Yan was sad, a personal soldier walked in from outside, hugged his fists and said, "Qiqi Regent." General Zhang is back! ”

"Please!"

A moment later. Zhang Liao walked in from outside the tent. With an expressionless face, Zhang Yan saw Zhang Liao like this, and it seemed that he didn't need to ask, knowing that Zhang Liao had no good news to bring back.

Zhang Yan said lightly: "It's good to come back, you're tired too, go down and rest early." ”

"Lord Regent, don't you have to tell your subordinates about the harvest of this operation?"

When Zhang Yan heard the word harvest, he immediately came to his senses. "What's the catch?" he asked. ”

"Please take a look, the Lord Regent!" Zhang Liao pretended to be a mysterious way.

Zhang Yan smiled: "You still play this game with me?" ”

Although he said so, he had already gotten up and walked towards the outside of the tent, and when he passed by Zhang Liao's side, he said, "You lead the way in front." ”

"Whoa!"

Zhang Liao took Zhang Yan to the back of the barracks, which was still the barracks that specialized in making thunderbolts, Zhang Liao walked in front, opened the curtains, and the barracks were piled up into small hills like sulfur, which suddenly caught Zhang Yan's eyes.

When Zhang Yan saw these sulfurs, he was very happy. Hurriedly asked, "Wen Yuan, where did you get so much sulfur?" ”

"Bought from a merchant in the Western Regions." Zhang Liao replied truthfully.

Zhang Yan walked straight into the barracks. Looking at the brimstone, it was a pleasure, so that he could make thunderbolts in large quantities.

Just when Zhang Yan was happy, Zhang Liao said in a timely manner: "Qiqi Regent, on the way back, I heard a piece of news. ”

"What's the news?"

"Xiahoudun, who is stationed at Yanmen Pass, has already led the army to take the waterway and come to support Jinyang, according to their speed, they should arrive in Jinyang City during the day today, I don't know if the regent has received any news?" Zhang Liaodao.

Zhang Yan smiled and said, "Don't worry, this is what I expected." The reason why I didn't attack Jinyang immediately was because Cao Cao still had Xiahoudun, a remnant of the party, was in Bingzhou, and the Yanmen Pass was stationed at Yanmen Pass, which was easy to defend and difficult to attack, even if Cao Cao was defeated, Xiahoudun might not surrender. If you lead the army to attack Yanmen Pass, it will be time-consuming and laborious, so it is better to wait quietly here, waiting for Xiahoudun to bring his troops to come and throw himself into the net. ”

"It turns out that everything is under the control of the regent, and his subordinates are too worried."

Zhang Yan had these sulfur and wanted to reward Zhang Liao, but Zhang Liao resolutely did not want to reward him, saying that this was not a merit, it was just a blind cat touching a dead mouse. Besides, there were many people with him who were struggling to find brimstone, and if he were to reward only one person and not the rest, he would probably arouse the dissatisfaction of the people, and he suggested that Zhang Yan keep this reward for the purchase of sulfur in the future.

Zhang Yan listened to Zhang Liao's words and was very grateful, so he canceled the idea of rewarding Zhang Liao. He summoned his own entourage and told them to make thunderbolts overnight, ready to go into battle tomorrow.

So, hundreds of people stayed up all night, diligently making thunderbolts for tomorrow.

Overnight, these people who are familiar with the road actually made nearly 3,000 thunderbolts, plus the 300 bombs made a few days ago, so many thunderbolts are enough to raze the entire Jinyang City to the ground.

At dawn, Zhang Yan got up and went straight to the rear army to inspect, only to see a mountain of thunderbolts, and he was really happy.

Therefore, Zhang Yan ordered people to carry all the thunderbolts to the front army, and then handed them over to Gan Ning to be strictly guarded, and cut off all sources of fire around.

If these thunderbolts are kept well, they are a secret weapon, a killer weapon to destroy the enemy, but if they are not kept well, they will become a sharp weapon for self-destruction.

An hour later, the sky was bright, the morning sun was rising, and the golden sun shone on the land, as if it had covered the earth with a layer of golden light.

At this moment, Zhang Yan has led the army to Jinyang City, 10,000 troops, neatly lined up in formation, neat military appearance, flags fluttering, but the soldiers are all tense and ready for battle.

Zhang Liao led an army of 10,000 to the east gate of Jinyang City, Xu Huang led an army of 10,000 to the west gate of Jinyang City, and Tai Shici led an army of 10,000 to the north gate of Jinyang City.

Xu Chu, Gao Shun, Gan Ning, Lu Meng and others all surrounded Zhang Yan and lined up outside the south gate of Jinyang City.

At the same time, the right Xian Wang Qubei led 20,000 Xiongnu elite cavalry to arrive at the city of Jinyang, after the Dao came to express his intentions, Zhang Yan expressed his gratitude for the arrival of Qubei, but did not let the Huns participate in the war, but as a bystander, watching from the sidelines.

Zhang Yan had already asked people to divide the thunderbolt into four and prepare for the four city gates to attack at the same time, so that the Cao army in the city could not take care of each other.

On the tower of Jinyang City, Cao Cao, Guo Jia, Xu You, and Man Chong all stood at the south gate, and saw that the Huns were also coming, but they only watched from a distance and did not take action, so Cao Cao asked Man Chong what was going on.

Man Chong was also confused, he didn't know what was going on in the court of the Huns, and the cavalry of the Weishenme Huns would take the initiative to show favor to Zhang Yan's army.

However, now is not the time to argue about this, although the Huns came, they did not participate in the attack, which at least relieved the pressure on Cao's army.

However, Cao Cao didn't think so. In Cao Cao's view, there was a reason why Zhang Yan did not let the Huns participate in the war, and he should be afraid that the Huns would disturb Zhang Yan's entire jihua.

Zhang Yanjun has a weapon like a thunderbolt, although Jinyang City has strong defenses, it can't withstand the bombardment of such a weapon, and that kind of weapon is really perverted, and people can't stop it at all.

As soon as he thought of this, Cao Cao felt a headache, originally he had an army of crossbows that could compete with Zhang Yan, but that army had been wiped out in Jizhou, and many people had switched to Zhang Yan's account.

In this way, Cao Cao retreated in the city, but he had no chance of winning.

"Knock knock ......"

The dull drums of war were beaten, from slow to fast, and then the drum beat seemed like a rainstorm hitting the drum surface, and the sound became more and more rapid.

Suddenly, all the drummers stopped beating, and after a moment of abrupt cessation, a deafening cry rang out from all directions: "Kill! ”

In the camp of the Han army, the catapults were ready, with the loud shout, the boulders were thrown into the air by the catapults, flying directly towards Jinyang City, for a while, the stone chips on Jinyang City flew wildly, and the soldiers of the Cao Army hid behind the female wall to dodge.

At the same time, the Han infantry at the forefront began to carry huge wooden planks and rushed towards the moat.

Under the attack of the trebuchet, the Cao army on the city wall could not raise his head at all. The stones kept flying towards the city wall, killing and wounding many Cao soldiers, and the city tower screamed again and again, and it was already stained red with blood.

The infantry charging under the city soon came to the edge of the moat, and put the huge plank directly over it, only to hear a muffled sound, and the whole plank was horizontal above the moat.

Immediately afterwards, one by one, they erected a wooden bridge with these huge logs, which allowed the infantry and cavalry to charge to the city gate without any worries.

This time, it was still Gan Ning who was the one who charged, Gan Ning took the soldiers, rushed across the moat quickly, arrived directly under the city gate, threw all the thunderbolts he brought with him at the city gate, and then lit the thunderbolts, and everyone retreated a long way back, and protected themselves with shields.

"Boom, boom, boom, boom......"

For a time, the loud noise continued, and the power generated by the explosion blasted the entire city gate to pieces, and the enemy soldiers in the city gate were also blown away from the sky, and those close to the city gate were all blown to pieces.

At about the same time, the four gates of Jinyang City were blown open, and the Han army rushed into the smoke-filled city gates like a swarm, and ran desperately towards the urn city.

And the moment the city gate exploded, it also made the army behind feel excited, and everyone shouted and rushed towards Jinyang City in a very orderly manner.

Zhang Yan watched the battle outside, and saw the army pouring into the city, a faint smile appeared on the corner of his mouth, in his opinion, no matter how strong Cao Cao's army was, no matter how smart Cao Cao was, no matter how strong Jinyang City was, in the face of his army, everything was a floating cloud!

The sound of explosions continued to sound in Jinyang City, one after another, and all directions were shrouded in rumbling explosions, which made the Huns who were watching the battle from a distance shocked, and they were all afraid of Zhang Yan's Han army. (To be continued......)