In addition to Allen's lever crossbow design, Ivan did not have other gains. Among the many failed improved works, he took a fancy to a work similar to a repeating crossbow and specially held it in his hand to watch. A wooden gate for storing crossbow arrows is cleverly installed on the top of this machine crossbow. After loading the crossbow arrows, you only need to continuously pull the string of the crossbow to continuously fire the crossbow arrows. A total of five consecutive shots can be fired, which is regarded as the ancient version of continuous firing. Shots fired. However, perhaps because the design was too sophisticated, this improved crossbow malfunctioned during the two test firings and exited the test early. "The design itself has no problem in theory, but firing five crossbow bolts continuously requires too high a craftsmanship. The current manufacturing level cannot be met at all. No wonder it is so easy to malfunction. If it is changed to three crossbow bolts, it may be stable. Much more!" After reading the design manuscript of this crossbow, Ivan couldn't help but think. "Who is Feeney?" Alvin asked. So another guy walked out from the crowd of little devils, standing next to Allen. In terms of skinnyness, they were almost the same. "Fini, the little devil, specializes in intelligence, potential 56/67 (77)." Another little devil with strange talents, Alvin is already used to it. "Lord, Feeney is the little devil who first came up with the design of the lever crossbow!" Allen introduced next to him. "Oh!" Ivan couldn't help but look at Feeney a few more times: "It seems that your ability in designing new products is pretty good, but it's a pity that your hands-on ability is not that good. Otherwise, you wouldn't have failed to make the top ten in both tests. , but I have a good impression of the repeating crossbow you designed. Don't do anything else for the time being. The two of you will try to improve this five-shot repeating crossbow. Well, I think it will be changed to a three-shot repeating crossbow. If so, the performance should be much more stable, you might as well give it a try!" "Fini learned all his physics knowledge from Ivan. Even if he is arrogant, how dare he refuse Ivan's request, let alone what he usually says. The theoretical knowledge is clear and logical. The results of this test were so bad, I was really embarrassed, and I was looking for a chance to save face. Naturally, he clicked his head like a chicken pecking at rice. Ai Wen is also very satisfied to find two potential stocks with talent in weapon manufacturing in a row. Unfortunately, the remaining works have no highlights. Their design concepts are novel. But it's just a novelty. As a privately customized weapon, it may have some merit, but as a large-scale weapon deployed by the army, it is completely unqualified. Aiwen didn¡¯t have to worry about anything. He directly pointed out the problems in this area, took some representative design manuscripts, and explained on the spot why it couldn¡¯t be designed this way and what design should be adopted. And in what ways such a design can be used, etc., two or three hours passed. Finally, the homework assigned to these students last time was solved uniformly. What makes Aiwen a little regretful is that the young half-orcs who have learned the same knowledge as the little devils, and there are about the same number of them, do not have any potential stocks. Their research on this knowledge is obviously not as in-depth as the little devils, and they cannot produce it. What a decent work, maybe when it comes to brain development and thirst for knowledge, these two races are not on the same level! "If there is no improvement after continuing to study for a while, then let them graduate early!" Ivan thought viciously: "The men will be my soldiers, and the women will be my maids, ahem!" To those students They assigned new homework, and when they dispersed in twos and threes, Alvin ate something casually in the mayor's mansion to fill his stomach, then rested for a while, walked out of Alvin Town, and headed east. There are two branch roads branching off to the east of Alwen Town, one leading to the Yuanli Mining Area and the other leading to Siris Nair's residence. It is also the location of the only body of water in this area. Ivan had no intention of visiting Siris Nair, so he paused briefly at the branch intersection and turned in the direction of the Yuanli Mining Area. There was nothing to see in the mining site. Ivan took a quick glance and walked directly to the installation cave of Ptolemy's refining room. In the cave, blood-like metal pipes of various sizes were entangled with each other and vibrated regularly. Large groups of source liquid flowed through these pipes, and were finally refined into almost transparent light cyan source power. According to the design, the production limit of the Ptolemaic refining room is an average of 10,000 points of source power per day, but now the source power sent for refining every day has exceeded 6,000 points. If the structure that mines the source ore continues at the current rate, If the growth continues, within a month, another Ptolemaic refining room will have to be added to the small world. But after a month, the tense manpower in the main world territory will surely be relieved, and there will be nothing to worry about by then. "Remember, the Ptolemaic refining room also has a function, which can use the source ore to reversely synthesize magic crystal!" Ivan replied.Looking at the alchemy documents in his mind, he said to himself: "I don't know how many units of magic crystal can be synthesized from one unit of source liquid. Now that source power has a certain reserve, the income and expenditure have almost reached Balance, in the future, the number of mining structures will continue to increase, and there may be a large amount of surplus power. Then the second Ptolemaic refining room may be dedicated to synthesizing magic crystals? " Magic crystals are widely used and precious in the main world. In particular, hundreds of gold coins are often used as the most basic bidding unit during transactions. If anyone can own a box of magic crystals, it is equivalent to having a wealth of at least tens of thousands of gold coins. Ivan has long known that the Ptolemaic Refining Room can be used to synthesize magic crystals, but he has never considered transporting the synthetic magic crystals in the small world to the main world to make a lot of money and relieve the embarrassment of financial income. The lack of source power in the small world in the past was certainly one reason, and the other reason was the instability of the internal structure of the magic crystal. In the main world, as a kind of energy crystal, magic crystal is difficult to keep intact. Most of them exist in the form of magic crystal fragments. In fact, even if they are just fragments, they are still prone to explosion when stimulated. If Aiwen really wants to make a profit by inputting magic crystals, I am afraid that as soon as he enters the main world, the large number of magic crystals he carries will explode in a series, sending him to the west in an instant. Magic crystals cannot be brought into the main world, but can also be used directly in the small world. After benefiting from the two alchemical buildings, Aiwen successively collected many methods for making alchemical equipment with different functions from ancient books in the main world. These alchemical equipment may be difficult to refine successfully in the main world. In the small world, But it's not that difficult. If you refine it in large quantities and use magic crystal as a power source, you can obviously transform the environment in the small world faster. Thinking of a good thing, Aiwen followed a group of constructs transporting source power and wandered back to the central stone hall. Pushing open the stone door, Ivan walked towards the west. Unknowingly, he had been in the small world for most of the day. All the things he originally planned to do and the places he wanted to see had been completed one by one. At this moment, he also He couldn't hold it any longer. If Alvin hadn't had enough fun, he would have no choice but to force himself out and chase them away. Children, if you don¡¯t fight, you won¡¯t obey! As Ivan expected, Alvin's aura was still there in the lava area to the west, but I don't know if it was because the three of them were still playing the hide-and-seek game. They walked all the way until they came to the lava river, and Ivan They were not seen, so there was no way to talk about driving them away. After hesitating for a while, Alvin decided to start meditating now. Who knows when the three guys will show up. Inspired by the Hand of Source Power, Aiwen specifically used the authority of the small world and used the Loyal Servant Technique to create a servant of Source Power and let it guard him. Then he walked along the lava river bank and found a hidden piece of land. Corner stopped, took off his coat, and slowly soaked his entire body into the magma, leaving only his head outside. Molten Fire Meditation Method, this is Ivan¡¯s new meditation method. Compared with the basic meditation method, the Molten Meditation method can exercise up to ten times faster, but the requirements are also quite high. The high requirements here do not refer to the difficulty of the meditation method, but to the requirements of the external environment of the user's body. If the user only meditates in an area with a high concentration of fire elements, then the molten fire meditation method is only two to three times faster than the basic meditation method. The higher the concentration of fire elements, the greater the gains from meditation. If If the user directly soaks in the magma like Aiwen, then he can achieve the best effect, ten times the effect! Obviously, this meditation method is specially designed for those beings with special fire-resistant bloodline. For those with ordinary bloodline, this meditation method is only slightly stronger than the basic meditation method, and it is really of little value. Of course, for Alvin, this meditation method is perfect. (To be continued, please search Piaotian Literature. The novels will be better and updated faster!