Although the four skeleton crossbowmen they created before were powerful, they were not very threatening to the dragon at the peak of the ninth level of the transformation stage. Although the bones of the blood whale revealed the aura of a level 20 sea beast, it would not scare the dragon. The dragon is a royal family in the sea, so how could it be afraid of other monsters of similar levels? Moreover, the actual power of the four powerful crossbows is not enough to shoot through the dragon's scales.

At present, what is the best thing in Yuantian's hand that can shoot through the scales of the dragon? It is the dragon horn of the dragon itself. The dragon horn obtained from Qin Chuan's head can be said to be the best material for making crossbow arrows. Although the dragon horns of the dragon are very large, they cannot produce many dragon horn arrows, so most arrows still have to be made by dragon bones. Keeping the dragon horn arrows is to be used at the last moment.

Another thing is another thing that is troubled by another source of heaven, that is, the power problem of the strong crossbow itself. Although dragon skin is a good elastic material, as long as there is enough arm strength to pull the string and shoot it out, it must be quite strong. Even if the arm strength is not that great, you can still use your feet to stare at the crossbow and use the strength of your whole body to pull the string and hang up the machine. However, such power is not enough, and that method is too slow and stupid.

It would be a pity if the dragon skin is so elastic and tough, just used for crossbow strings. Yuantian wanted to make him more effective. The first sixteen spiral acceleration crossbows made of the first sixteen spiral acceleration crossbow was scrapped once because they did not have good crossbow body materials. Not only was it scrapped, but Yuantian himself, who also controlled the crossbow, was injured. Later, with the bones of the blood whale, it would not hurt the crossbow holder, but Yuantian still felt that it was not perfect enough.

It's different now. With materials as good as keel and dragon skin, you can create an extremely tough crossbow body. As long as the strength of the crossbow body is enough, the power device inside can naturally be enhanced. Sixteen-position spiral acceleration is not the limit. Yuan Tian also wants to try twenty-four-position spiral acceleration or even thirty-two-position spiral acceleration.

The power generated by the thirty-two-position spiral acceleration is not twice that of the sixteen-position acceleration, but its 256-point effect. The speed and penetration of the crossbow arrows shot out by this acceleration effect are naturally self-evident, but it is also a huge test for the crossbow itself. The test is not only the strength of the crossbow itself, but also the orbital design problem during the acceleration process. If it is unreasonable, it is likely that the crossbow arrow will bounce out halfway during the acceleration process and shoot it injure itself.

Yuantian is worthy of being a manufacturing master, and he can draw drawings and calculate data with ease. If the alchemists in the manufacturing team saw the drawing drawn by the leader of the team, they would probably have to bow to him. Especially the young alchemist, who is also a fan of mechanism manufacturing, has many small inventions, but compared with what Yuantian has done so far, his small inventions are simply impossible to see.

Thirty-two spiral acceleration crossbows, and the crossbow arrows are still made of dragon horns. Even if they are in the Guiyuan stage, the monks in the Guiti stage will definitely be injured when they are caught in such a moment. If they do not have a good defensive magic weapon, their bodies will not be able to withstand such fierce crossbow arrows.

Yuan Tian didn't plan to kill a dragon at the peak of the ninth level of the Transformation Stage with just one arrow. Although the power of this crossbow arrow is definitely not small, the dragon will not stand there and wait for it to be shot. Besides, the dragon is not those sea beasts with low IQ. In addition to relying on their powerful body, it will also use some magic weapons. Yuan Tian has every reason to believe that the Qin Dragon Clan will give the best treasures of the clan to this representative who participated in the duel.

After a whole night of busyness, Yuan Tiancai designed the crossbow frame of the thirty-two spiral acceleration crossbow. The crossbow frame is only part of the crossbow body, because the crossbow body also includes the power system and the orbit of the launch of arrows. This crossbow frame alone has ruined Yuan Tian's mind. Although the dragon skin and keel bones are very tough, try not to let the crossbow frame suffer useless impact. The strongest crossbow arrow has been launched at the lowest cost, which is the result that Yuan Tian wants.

The drawings of the crossbow frame have been drawn, so the next step is naturally to enter the manufacturing process. However, Yuan Tian was not in a hurry to do it because he had one thing left, that is, the power source of the powerful crossbow. First of all, he does not have a spiritual card slot now, so he must apply to the Penglai Immortal Alliance organization to buy some. Members in the organization will definitely have a discounted price to purchase, but they won’t be a penny. This is the powerful thing about Penglai Immortal Alliance. When making money by making money from external distribution, he does not forget to stimulate domestic demand.

There are also seven-chouge grocery stores in the Penglai Immortal Alliance on the Nanzhou Warrior Continent, and not only the city of War God City. Although there are no shops opened by the Penglai Immortal Alliance in the inland war preparation cities, there are seven-chouge trees that are not good at chains in many coastal cities. Even if Yuan Tian is not familiar with the members of other cities, he can transfer goods from there with his identity as the deputy leader of the manufacturing team.

Spiritual power card slots are still relatively scarce. Even if you transfer goods from the Qiqiao Pavilion grocery store in various cities, Yuantian only gathered 64 spiritual power card slots. The Nanzhou Warrior Continent never had to compare with the Dongzhou Cultivation Continent. What the monks here are thinking about how to practice martial arts and fight. At most, they will consider heavy weapons and heavy armor during melee battles, and are not very interested in manufacturing long-range weapons of the organs. Therefore, the number of spiritual power card slots placed by the Penglai Immortal Alliance in several stores here is very small.

If there is no mistake, the sixty-four spiritual power slots can only create two thirty-two-position spiral acceleration crossbows. This is far from the effect that Yuan Tian wants. Even if the sixteen-position spiral acceleration crossbows held by the four skeleton crossbowsmen are removed, they can only dismantle sixty-four spiritual power slots and create two more powerful crossbows.

Time waited for no one. While submitting an application to the headquarters, Yuantian began to design and manufacture the entire crossbow body. In addition, he did not forget to use the keel bones and dragon horns to grind some crossbow arrows first.

Crossbow arrows are not just a casual one, but they are also very particular. In order to be able to move in a spiral acceleration orbit, crossbow arrows cannot be too long, but their penetration and balance ability must be guaranteed. If the penetration power is not enough, it will greatly affect the killing ability of crossbow arrows. If the balance ability is not enough, it will easily miss the shooting or cannot be shot out at all.
Chapter completed!