All the way to Hanyang City, I rushed back to Hanyang City overnight, without the excitement when I first came, and there was just the frustration of failure.

"Big brother, it's almost time to Hanyang City!" Guan Yu looked at the tired Liu Yi with a little worry.

"Good! Then let's speed up and go to Hanyang City to have a good rest and then figure out a way. Liu Yi was very tired at this time, and his low mood made him even more tired.

Speed up to the foot of Hanyang Castle, at this time the gate is closed, and many guards have been added to the castle tower, looking ready to fight at any time.

"It seems that General Qu doesn't believe that we can come back!" Liu Yi looked up and saw that there were more guards on the city tower, which was obvious to Qu Wei that Liu Yi felt that they would not be able to come back, so he was ready to prevent the enemy from attacking at any time.

"Listen to the people above, we are the troops brought by Lord Liu to the raid yesterday, please open the city gate and let us in." Guan Yu shouted at the city tower.

"Wait, I'll send someone to inform General Qu now!" The guards on the city tower obviously didn't dare to open the city gate at will, because Qu Wei had instructed him before that if Liu Yi and them came back, they must notify him to confirm whether it was Liu Yi and them.

After waiting for a while, Qu Wei poked his head out of the city wall, because in ancient times there were no lamps and only torches, so Qu Wei didn't know if he was a night blind patient or how to drop, he couldn't see clearly.

"Downstairs in the city, if you are really Lord Liu, use the thing called firecrackers last time to make a noise and take a look." Qu Wei shouted at Liu Yi and them, he knew that only Liu Yi had firecrackers.

"Second brother, give, throw it away, don't hurt anyone!" Liu Yi handed a firecracker to Guan Yu, he really didn't have the strength to throw it, and this was a firecracker with small stones.

Guan Yu lit the fuse with a fire fold and threw it into the distance.

"Smack!" A firecracker rang out in the night sky.

When Qu Wei heard the sound of firecrackers, it was indeed the sound he heard that night. Not only was his face happy and he quickly asked someone to open the city gate, he thought that Liu Yi and they had succeeded, but when he went down to the city tower to greet him, the result was the opposite of him, half of them were missing, not to mention, and they were all very tired, and they could see that Liu Yi and they must have failed.

"Lord Liu, it doesn't matter if you fail, we can come again, I have now sent someone to ask the imperial court for help, as long as we defend Hanyang City, I believe that when the imperial army's army arrives, we will definitely be able to thwart this gang of rebels." Qu Wei comforted Liu Yi, and he also knew how hard it was to be defeated in the first dispatch.

"General Qu, thank you for your concern, I want to think about it during this time, and the city defense will be handed over to you and my second brother." After the defeat on the first battlefield, Liu Yi calmed down, as the saying goes, how can you really grow up without going through hardships.

"Okay, Lord Liu, leave everything to me and General Guan, you go back and think about it." Qu Wei arched his hand.

"Then I'll rest assured, second brother, you stay here in the city tower, and I'll go back and be alone for a while." After Liu Yi finished speaking, he drove the horse to his residence.

Looking at Liu Yi who drove away, Guan Yu's heart was full of worry, from the beginning of him and Liu Yi to Liu Yi's moving him again and again, he had already regarded Liu Yi as a relative.

Back at the residence, Liu Yi did not alarm He Le, and went into the room and lay down. The first disadvantage of sending troops hit him very hard, and this does not explain how others are, but only shows that he is incompetent to take the lead.

"What the hell is to be done?" Tribulations stimulate one's potential and can also make a person calm down completely. At this moment, Liu Yi's brain was running rapidly, thinking about the exquisite strategies of the famous generals of the past dynasties, but many, many strategies were not suitable for the current situation, and he even thought of Zhuge Kongming's empty city plan.

The brain quickly swept through one dynasty after another, and suddenly Liu Yi thought about everything.

"Yes, mines, terracotta mines!" Liu Yi jumped up happily at this time as if he had grasped a life-saving straw, he just thought of the Anti-Japanese War during the Anti-Japanese War, because I couldn't afford to use iron mines, and invented pottery mines and stone mines, they are simple and easy to do, and the materials consumed are simple, and in the current situation, it is best to make pottery mines to break the enemy.

"Master, master!" Liu Yi's frustration at the moment was swept away.

"Lord, are you back?" Hearing Liu Yi shouting at him, He Le hurriedly put on his clothes and hurried over.

"Yes, it's back, and it's defeated!" Liu Yi lowered his head guiltily as he spoke.

"Lord, don't be discouraged, we will still have a chance in the future, seeing that you are in such a hurry, you must have thought of some way to break the enemy, right?" He Le looked at Liu Yi's expression and knew that Liu Yi had a way.

"That's right! We're going to make a firecracker that's buried in the ground and explodes when you step on it. Liu Yi told He Le about landmines.

"My lord, is there really such a strange thing?" He Le heard Liu Yi talk about landmines, and he said it like a god.

"That's right! I don't know if you can burn ceramics? Liu Yi asked expectantly, as long as He Le can make ceramics, he will first make a pottery mine to try, if it is successful, he will hire craftsmen to make a large number of them, and make him more than 100,000 buried in Han Sui Ma Teng's army.

"Firing ceramics, I know a little bit about this, it should be able to be fired." He Le also learned pottery in his early years.

"Okay, let's just make a stove and get started." Liu Yi said.

When the stove was ready, He Le began to make the shape of the mine according to the appearance described by Liu Yi, He Le pointed at the side while doing Liu Yi, tossing for a long time, Liu Yi was finally satisfied, and He Le was also relieved.

When the shell model of the mine was put into the furnace and the mouth of the stove was sealed, Liu Yi asked He Le to sleep, as for himself, he was not sleepy at all, and he was still adding firewood to the stove.

The night passed quickly, and the sun began to shine on the earth in the east.

"Ahh Liu Yi snorted, he gathered in front of the stove all night last night.

"The lord can take it out!" He Le got up very early, firstly, as a habit developed by working people, and secondly, he wanted Liu Yi to make the mines as soon as possible, so that Liu Yi could relax.

"Can you take it out? Quick, quick, quick, take it out! Liu Yihou urged He Le anxiously.

Poking open the furnace mouth, He Le's hand reached into the stove, which was still a little hot, and took out the shell of the mine.

Seeing the mine shell made by He Le, Liu Yi was still very satisfied, at least it was similar to what he came up with in his head.

"Very good, master, you go buy more nitric acid, sulfur, and burn some charcoal, and when you come back, we will experiment." Liu Yi walked into the room with the mine shell in his arms and tinkered.

When he came to the room, Liu Yi first did not touch the shell of the mine, but then grinded the stone to replace the steel wheel ignition device of the mine.

After the stones were polished, Liu Yi stuffed most of the gunpowder into the shell, and then went outside to find a handful of small stones, and then installed the steel wheel ignition device replaced by the ground stones on it, and then covered it with a lid, and a pottery mine was ready, just waiting for He Le to come back.

After waiting for a long time, He Le came back, this time he didn't ask Liu Yi to come out to carry the materials, but called a few soldiers, now Liu Yi is too guarded, and the generals are all his people, so He Le can call the soldiers.

"Master, come and see!" Liu Yi saw He Le coming back, and hurriedly pulled him into his room.

And He Le saw the mines that Liu Yi had made on the table, and he was also curious.

"This is what the lord said about firecrackers that will explode if buried in the ground?" He Le tapped the mine with his hand, and he really couldn't see anything extraordinary about it.

"That's right! That's it, I call him a mine! Liu Yi proudly glanced at the mines he made, and even admired himself.

"Then, let's test the power of the mines!" He Le is very curious about landmines and can't wait to try them.

"That's what you mean, you call the soldiers outside! Let's go outside the city gate and give it a try. Liu Yi instructed He Le.

"Let's go!" After He Le finished speaking, he ran to the door and called the soldiers who had not left yet.