Thanks to the old turtle in the river dam of the book friend for the reminder ticket

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Around the New Year, there are three things that Xuzhou people talk about the most. First, Xuzhou successfully resisted the joint attack of the princes of the four routes; second, Liu Bei became a general; Third, after Liu Bei became a general, the officials of Xuzhou were rewarded.

According to everyone's thoughts, under the background of Liu Bei's promotion to the position of general and Xuzhou's victory at the same time, Xuzhou will definitely reward Wenchen generals on a large scale, and at least let everyone be promoted to the next level. But the strange thing is that there has not been even a trace of movement in the general's mansion.

Tian Fan didn't have any time to think about these things at all, because he was too busy!

In the days before and after the New Year, he kept visiting and being visited. On the twenty-eighth day of the lunar month, he met Fa Zheng by chance, and he recommended Fa Zheng to Liu Bei in the afternoon of the same day. Liu Bei chatted with Fa Zheng for a while, and immediately learned about his extraordinary ability, and happily appointed him to join the army.

On the twenty-ninth day of the lunar month, he took his family to visit Lu Bu. Lu Bu's wife, Ren, also known as Diao Chan, gave birth to a beautiful little daughter on the twentieth day of the lunar month. This made Lu Bu, who had never tasted the taste of being a father since Lu Xin was born, very excited. When Tian Fan visited, he couldn't help himself with excitement, clumsily hugged his little daughter, and showed off at Tian Fan, even if the girl was crying, he didn't care at all.

At this time, Lu Bu did not have the monstrous murderous aura when he was a general, and he was just a stupid young man who had just become a father. This made Lu Xin very unhappy, and even said that Lu Bu forgot about her when he had a sister. Lu Bu's wife, Yan, also loves this little daughter very much, and this little girl's name is Lu Rong, which was taken by Yan.

After the New Year, on the second day of the Lunar New Year, Tian Fan visited Zheng Xuan, a celebrity, mainly to ask Mr. Zheng to help him propose to Liu Hong. Liu Hong, as one of the three gentlemen of Dongguan Taixue, has too high a status, and Tian Fan is very familiar with Chen Deng's old man Chen Qi, Chen Qun's old man Chen Ji, Xuzhou persuaded to learn to engage in Kong Rong, etc., and there is a big gap between him and him in terms of status. Therefore, Tian Fan could only helplessly ask for the old master Zheng Xuan.

The old master really said to Tian Fan that he treated Tian Fan like a nephew, and when he heard that Tian Fan was coming, he immediately agreed without hesitation. Tian Fan thought about it and felt very sorry for the old man. He is almost eighty years old, but he still has to run for his junior's marriage, and he is really a little unhappy. Thinking of the disgusting thing that his younger brother Tian Kun did, he felt even more sorry for the old man. If you have the opportunity, you must repay him well!

On the third day of the first lunar month, Tian Fan visited Guan Yu again, not for anything else, but for his marriage to Lu Xin. As the highest-ranking military general in Liu Bei's army, Lu Bu must find someone with a similar status in order to match him. Tian Fan thought about it for a long time, and finally determined that the matchmaker was Guan Yu. After Guan Yu's incident with Guan Ping's mother and son, the relationship with Lu Bu has passed the freezing period, and now the ice and snow are beginning to melt, and there are signs of getting better and better. And Lu Bu is the Marquis of Wen, and Guan Yu is the Marquis of Shouchun, these are all county marquis, and their status is also comparable.

Guan Yu also wanted to repay Tian Fan's kindness, and when he heard this, he immediately thought that this was a good opportunity to have a good relationship with Lu Bu, and it was also an opportunity to help Tian Fan, so he naturally agreed. Liu Bei changed Guan Yu to a big mansion in Xiapi, so that his younger sister Hu and nephew Guan Ping'an could have a home, so that Guan Yu could enjoy the joy of family every time he returned to Xiapi. The Hu family still lives in Liu Bei's mansion, and the house's mother, Cao Rui, values her younger siblings who are comparable to her mother at this age, saying that she will not take good care of her and will never let her out of Liu's mansion.

Originally, Tian Fan thought about it well, and left after the matter was discussed, because the craftsman camp had something to find him. However, it happened that on that day, Zhang Fei also came to Guan Yu for a drink, so Tian Fan was happily poured by the two brothers. …,

Zhang Fei and Gan Youniang's marriage has also been raised. It is said that Gan Youniang's side, after seeing Zhang Fei's calligraphy and painting, there are also signs of loosening. Therefore, Zhang Fei was in a very happy mood. People are in good spirits at happy events, this guy has a large amount of wine, and then he is in a good mood at this time, this mess can make Tian Fan miserable.

On the fourth day of the first lunar month, Tian Fan endured the headache of a hangover, got up early, rode a horse, took Shi A and Old Man Tang, galloped out of the city, and went straight to the craftsman's camp.

At this time, the annual leave has not yet passed, but the craftsman camp has already begun to be busy. Pu Yuan, Ma Jun, Li Liang and others came to the craftsman camp early, waiting for Tian Fan to come.

Some people say that having a child is not a child, and giving birth is a litter. Tian Fan hadn't seen it, and he didn't dare to confirm it. But today, he has seen the gang of guys in the craftsman camp, and if they don't get results, they are out of a litter!

No, the super repeater, that is, the hundred-round crossbow and the crucible, has been successfully developed, and the ballista has also made a breakthrough. Therefore, he had to endure a cracking headache and ran over early in the morning.

In the second battalion of craftsmen, as the workload became larger and larger, the original old men felt powerless. In addition, they have seen the skills of Ma Jun and Pu Yuan, and they are also deeply admired, and now they are no longer in charge, but are in charge of their respective parts. In the second battalion of craftsmen, Ma Jun is now the mainstay, supplemented by Pu Yuan. It's just that Pu Yuan is introverted, and he is usually responsible for external communication and coordinates material rationing with Zhuge Jin and others, but in fact, Ma Jun is alone.

Pu Yuan has been experimenting with new cold quenching techniques, and the methods provided to him by Tian Fan have been successfully tested. Moreover, the first batch of apprentices brought out by him have already been discharged, and now the first batch of twenty hundred steel knives they have built have been given by Liu Bei to the middle and senior generals in the army a few days ago.

Seeing Tian Fan coming, several people hurriedly greeted him.

Tian Fan didn't say anything polite to them, and said, "Deheng, take me to see the Baifa crossbow, and then look at the crucible and ballista later!" ”

Several people nodded hurriedly and let him into the second battalion of craftsmen. And Shi A and Old Man Tang stopped at the door very consciously, entered the row of huts at the door, sat down to drink water and chat, and waited for Tian Fan to come out.

The hundred-shot crossbow is huge, with a crossbow arm that is one zhang long, more than six feet high, and weighs more than fifteen stones. This kind of thing can only be towed by a horse-drawn cart. The crossbow arrows used are also specially made, with a length of five feet, which is much longer than ordinary feather arrows.

Tian Fan didn't know if this kind of crossbow machine was used by Wei Huo back then, but looking at this size, he felt suspenseful. This thing is also a little too big, can it be used flexibly on the battlefield?

Sure enough, when asked Liu Sheng, he replied: "My lord, this crossbow is indeed not the crossbow used by the two generals of Wei Huo. The crossbow they used at that time was a box-like crossbow machine, with only two bowstrings behind it, and a wooden plank was connected between the two bowstrings, and there was a groove in the plank to insert the end of the feather arrow into the groove to prevent it from slipping. In addition, the interior design is very complex, with multiple sets of wooden planks that support the feathered arrows. That thing could only be used once in wartime, and it was too complicated to rewind, and the box had to be opened in order to be wound again. The whole winding process also lasted for half an hour. We looked at it for a while, and we felt that it was extremely cumbersome to replicate and not very practical, so we redesigned it. ”

Tian Fan nodded slightly, looked at this huge guy, and asked, "Deheng, tell me about the practical effect of this thing!" ”

Listening to Ma Jun's introduction, this thing has a range of between 200 and 250 steps, which is considered to be a short range among crossbows, but it is powerful. Moreover, according to Tian Fan's requirements, Ma Jun focused on the firing point of the crossbow machine, so that the landing range of the feather arrow became more reasonable. After testing, at a distance of two hundred and twenty paces, this crossbow can shoot a hundred feathered arrows at one time, which can cover the range of ten steps by ten steps. Basically, it became a weapon of wide destruction. …,

Imagine that in the enemy's dense array, in the same position, two consecutive blows, those more than 100 soldiers will be gone!

At the same time, Ma Jun, Liu Sheng, Fei Wo and others also redesigned the installation system of the crossbow machine, so that this kind of crossbow arrow has changed from the original disposable to non-disposable. However, the process of installing the arrows still took a quarter of an hour.

Tian Fan has a headache! A quarter of an hour, sometimes a minute, can change the tide of a battle. In this way, this super repeater is basically a disposable. However, if the two sides are deadlocked, it can continue to exert its power.

Shaking his head, Tian Fan said with some sourness: "Deheng, half a quarter of an hour is still too long!" Can you find a way to improve that? ”

Ma Jun blushed a little and shook his head, and said, "My lord, to be honest, this so-called quarter of an hour is actually not accurate!" When we experimented, it was pulled by many people, which allowed the crossbow machine to be resuspended. But you also understand that the situation on the battlefield is changing rapidly, and the war is also very cruel, and the changes in the war will definitely have a certain impact on the psychology of the people, so when they are used, their play is still very debatable.

"In addition, this pair of crossbow machine is too complicated, the crossbow arm and crossbow string alone are full of five pairs, when firing, each crossbow string is placed on twenty arrows, and the same pair of hanging knives is used when firing, so that five crossbow arms can be fired at the same time, and a hundred feather arrows can be fired at the same time. However, when the crossbow was wound, it was separated, and the arrows could not be placed all at once, and the soldiers had to place them by hand. In addition, the strength of each crossbow arm is 30 stones, and it requires at least ten people, five strings, and five fixed crossbow machines to complete the winding process. ”

Shrugging helplessly, Ma Jun concluded: "My lord, the winding must be wound again and again, if not, five bowstrings are wound together, which is a full strength of one hundred and fifty stones, and it takes at least fifty people to do it, even if we can design a crossbow machine that can be wound at the same time, it is completely a decoration, and it is not used on the battlefield at all." Moreover, the strength of one hundred and fifty stones is too great a test for a crossbow rack, and if the size of the shelf remains the same, no kind of wood can withstand such a large force! But if the size of the shelf changes, then ......"

Ma Jun made a gesture of powerlessness and did not say any more.

Tian Fan understood what he meant, if the frame changed, then the entire crossbow machine would have to be redesigned, and what kind of monster might not be able to be designed at that time!

Nodding, Tian Fan fell into deep thought. It can be seen from Ma Jun's words that in order to shorten the launch time of the crossbow machine, there are three problems to be solved, one is the upper limit of the force on the crossbow rack, the second is the fixation of the crossbow machine and the metamorphosis force required to wind it at the same time, and the third is the problem of repositioning the feather arrows.

If these three problems are not solved, then everything is a floating cloud!

But how do we solve these three fatal problems?