For several days, Han Xiaofeng had to go underground to communicate with Lu Chao to learn the production of the trap bird. The working principle of the cannon has already been told to him, the design is even simpler, just draw a sketch, and let you figure out the rest slowly, what I'm afraid is that you do it too quickly.

I have to say that there is a reason why the technology of making the bird has been lost, and there are many parts to make it, which are delicate and complex. In ancient times, there was no glue and rivets, all the parts were made of wood by hand, and some of the joints needed to be fixed, some needed to be moved, and some required to be able to open and close.

It took Lu Chao a month to finally complete the production of the trap bird, with wings spread out one meter long and a height of 30 centimeters. The wings are very thin, and after trying it underground, it can really fly for about ten minutes, but this is still far from Han Xiaofeng's requirements.

Han Xiaofeng dismantled Lu Chao's trap bird, but it couldn't be assembled, and he was embarrassed. Han Xiaofeng found wood and began to make a miniature version of the trap bird. Whether they can convey the message here or not is up to them.

Lu Chao also went to his own room, but it was underground, and he had to be taken by Xiao Tao every time, which was very inconvenient. If there was something he didn't understand, Han Xiaofeng went to Lu Chao, and he had to waste a few hours every time. But this trap is too large, too small and too far to fly, which is a very contradictory problem. It seems that we have to discuss with Lu Chao to improve and improve.

On this day, Han Xiaofeng found Dao Lu Chao, and his artillery research had also made a breakthrough, and the ammunition was a solid iron ball. The barrel problem was also designed, but the barrel was rough, which caused a lot of trouble for firing. Han Xiaofeng had to admire the amazing talent of this Luban descendant in design.

Lu Chao has been troubled by this question recently, and asked Han Xiaofeng, "Brother Han, do you have any opinions about this cannon breech problem?" ”

Han Xiaofeng said, "This cannon chamber should be smooth, there should be no bends, and I don't have any good suggestions, it's nothing more than water grinding kung fu and polishing it slowly." ”

In this era, there are no machines, what else can be done, you can only rely on manpower. Even if this is made, it will inevitably blow up, but this can't be said, if you say it, you are digging a hole for yourself. If it can't be solved at that time, Yang Xiu must think that I am trying to harm him.

Han Xiaofeng didn't want to get entangled in the issue of artillery, so he had to quickly improve the trap bird, it had been almost a month since he was caught here, and he had thought a lot about the method, only this trap bird could transmit the message.

Han Xiaofeng asked, "Brother Lu, is it possible for this bird to be improved and made a little smaller, and at the same time, it can fly longer and farther." ”

Lu Chaodao said, "It's okay to shrink, but it will definitely affect the flight distance, after all, the wings have become smaller." ”

Han Xiaofeng knew this question and asked, "Make the wings bigger, the body of the bird should be the size of a palm, and the wings should be folded." ”

Lu Chao said, "The size of a palm, can it be folded?" It's a bit difficult, but why are you doing such a small thing, do you want to put it in your pocket? ”

Han Xiaofeng was very conflicted in his heart, he didn't know if Lu Chao was trustworthy, if he was discovered, Han Xiaofeng must have no doubt. However, Han Xiaofeng decided to block it.

Han Xiaofeng said, "I want to use the trap bird to transmit information, I want to escape, I don't want to live this kind of dark day, I want to live in the sun." Lu Chao, if you want high density, go high density. But I still hope you can help me. ”

Lu Chao looked at Han Xiaofeng strangely and said, "Why should I be high, I don't want to live under this ground, I am willing to help you, but you must take me out with you." ”

Han Xiaofeng said, "I'm very happy that you're willing to help me, but I'm not sure if I can succeed." The stakes are extremely high and the chances of success are slim. ”

Lu Chao said, "I have no hope at all when I stay underground, and there is some hope for working with you, why not try." ”

Han Xiaofeng was very happy, with more Lu Chao, the probability of escaping was greatly improved, and the plan had to be changed. Han Xiaofeng told Lu Chao his previous plan, and the transformation of the Organ Bird was only one of the steps, and it was also the most critical step. Lu Chao must pay close attention, and the development of artillery can be carried out slowly, holding Yang Xiu back.

Han Xiaofeng and Lu Chao met alone, or others met alone. Yang Xiu ignored it, it seems that he has this full confidence in this underground town, and no matter how good his plan is, he can't escape?

Han Xiaofeng returned to his room and began to make a detailed plan for escaping. The hole in the stone wall is the key to escape, the hole is only the size of a basketball, and the bird must be the right size to be plugged out, and whether it can be found or not can only be left to fate. Now that Lu Chao has joined, it is different, you can take the initiative, you don't have to wait to be rescued, you can save yourself.

In the next few days, Han Xiaofeng rarely went to Lu Chao, first, to give Lu Chao enough time, and secondly, to avoid suspicion, so as not to be detected. Han Xiaofeng didn't know if anyone had planned to escape before, but there was definitely no one who escaped. As a traveler, I don't want to waste my time in this hole.

Half a month later, Lu Chao finally succeeded in transforming a foldable trap bird, and the wings were changed to the shape of an oil-paper umbrella, which was retractable and foldable, and the volume was also reduced. I made two of them, which was far from enough, at least seven or eight.

Han Xiaofeng explained some precautions to Lu Chao, took the trap bird and left, and Han Xiaofeng wrote some of the situation here on the wings of the trap bird with tung oil. When it dries, you can't see anything, but you can see the handwriting when you soak it in water.

At ten o'clock in the morning every night, while Xiantao was asleep, he set up two stools and flew a trap bird towards the outside of the transparent hole, how far it could fly, and whether it could be discovered by the woodcutter or the medicine farmer was left to fate.

During this period, I heard Lu Chao say that the barrel has been polished and smooth, and an artillery firing experiment will be done in the near future, and Yang Xiu will also be present in person. Han Xiaofeng told Lu Chao not to approach, there was a danger of exploding.

Han Xiaofeng was wondering whether to tell Yang Xiu that if he was killed on the spot, it would be a good opportunity to escape in chaos, but he was afraid that it would backfire, and if all martial law was imposed at that time, the success rate of escape would be even slimmer.

On this day, the dungeon was preparing for the artillery test firing, and the site was in the open area of the ore vein mining site. Yang Xiu, the king of Shu, Zhao Gonggong, the chief eunuch, Yang Liu, the county lord, and the chief guard were all present.

Han Xiaofeng deliberately appeared beside Yang Xiu, the barrel of the newly made artillery was dark and shiny, and the muzzle of the cannon was cold. The moment the artillery fuse ignited, it burst into flames, and suddenly there was a loud bang, and the bottom of the barrel exploded, and Han Xiaofeng threw Yang Xiu to the ground with an arrow step because he had been prepared. Han Xiaofeng only felt that his head was buzzing, and his ears were cold, so he was unconscious.

On this day, the second cow who was collecting medicine was smirking at a ginseng plant, and the small shovel in his hand kept flying. I can exchange some money to buy some delicious food for my daughter-in-law. Suddenly, a gust of wind blew, and a bird with beautiful wings flew above his head, and it was a palm-sized trap bird, with wings and words on his back, which was a rare object. This Erniu was so happy that he decided to go back to play with his son.

I don't know how long Han Xiaofeng woke up slowly, his whole body was sore, he was really lucky not to die in this catastrophe, not dying meant that he had won the bet, so it should be enough to win Yang Xiu's trust.

It is no longer Xiao Tao who takes care of himself, but Yang Liu. It seems that this willow is his nemesis. appeared as soon as he was injured, but this appearance should be Yang Xiu's meaning.

Yang Liu was very happy to see Han Xiaofeng wake up. said, "Master Han, you finally woke up, scared me to death." ”

Han Xiaofeng's back hurt to death, and he said hoarsely, "How is the prince?"

Yang Liu said, "My father is fine, if it weren't for you, he would have been seriously injured at least, but I'm curious, he captured you and imprisoned you here, why did you save him." ”

Han Xiaofeng knew that he would ask this question, and said, "At first, I hated him a lot, but later I found out that the prince had run this place like an iron pass, and he had a lot of talents and excellent weapons and equipment. And the prince can endure for decades in order to realize his ambitions, he can do it, so why can't I be Han Xin? ”

Yang Liu said, "I don't understand your men's minds, I'm just a woman, I don't have such big ambitions, I just want to marry and teach children with the man I love." ”

Han Xiaofeng is not a fool, he knows that Yang Xiu has already liked him, but Han Xiaofeng has no feelings for her.

Yang Liu talked about the explosion that day, many people were injured in the explosion that day, and those who were close were killed on the spot, and the power of the artillery was too great, beyond imagination. It also caused part of the vein to collapse, but fortunately he was not buried alive. I didn't expect it to be so powerful at the time, otherwise I wouldn't have taken this risk, but fortunately I only suffered a back injury.