An ordinary animal skin needs to go through processes such as nitration and tanning before it can be used to make all kinds of leather products. The level of the corpse material of tianwai evil devil is countless times higher than that of ordinary beasts, and even much stronger than the Dragon corpse obtained by Ye Zan before. The skeleton materials of extraterrestrial demons contain powerful forces, or more accurately, the material qualitative changes brought about by powerful forces.


    For example, the skin of extraterrestrial demons is different from the skin structure in human common sense. It does not exist at the same level from the cellular level. If, simply in terms of energy intensity, maybe every cell in the external demon''s body that day can be compared to the material like the best spirit stone. If you want to deal with such materials and use them as well as possible, the processing work needs to be done is not simple.


    Yezan brought the war Fortress into the small world, which means that there are digital French "labor" all at once. However, these "labor" in the small world can only do labor. After all, in yezan''s place, no matter what materials are processed or used, the most important means used is the cultivator''s method of refining utensils.


    Of course, this does not mean that the "labor" in the small world is useless. Even though ye Zan has a large number of Engineering robots, he can complete some ordinary engineering tasks well. But there are also some things that require people with certain strength to be competent. After all, robots are just robots. Except for the Yuanshen mechanical warrior, other robots are just better than ordinary people.


    In other words, ye Zan and Ping''an are the two people who really deal with those materials. As for the heroes of the small world, it''s not that they can''t help at all, but that''s to do some initial preparations. For example, cutting and polishing of materials, or soaking certain materials with some drugs under the guidance of Ye Zan and Ping''an.


    "The back skin of tianwai evil is the most suitable choice for making fortress armor. Previously, with the help of two supreme masters, Shenji and Daoyuan, it has been preliminarily cut, but it is only for further processing. Now, I need you to use the tools I provide to cut them into such a shape." Ye Zan summoned the indigenous heroes to start specific tasks.


    Not far away from ye Zan, a lot of hills have been piled up in the open space. It can''t be seen whether it''s leather or something. That is the back skin of the tianwai evil, which has been preliminarily cut and decomposed by the two supreme masters. Now it is stacked there layer by layer. Of course, the skin must be very different from the skin in people''s common sense. It''s like a cut jade board. I think it''s good to pave the floor without armor.


    The huge body of the tianwai demon, just the back skin Ye Zan said, is enough to meet the armor needs of the whole war fortress. Moreover, with the thickness of the skin, in fact, only a thin layer needs to be peeled off when making armor.


    "This is simple, let''s leave it to us!" the Sun King and other indigenous heroes immediately responded. For such coolies, they may have some disagreements in their hearts, but no one shows ignorance of the current situation. After all, some of them are counting on Ye Zan to "charge", while others are waiting for ye Zan to take them out.


    After receiving Ye Zan''s task, those indigenous heroes immediately became busy and became workers on the construction site one by one. They urged their strength to move pieces of cortical materials to the open space and cut them into the same size shape according to yezan''s requirements.


    On the other side, yezan has built a base for processing materials on the ground. This "treatment" does not mean simple cutting and grinding, but further refining process. Night peace is in this base. The materials transported by the robot are put into the pool or furnace tripod one by one, and the Dharma formula is played one by one.


    "Master ye, please handle the leather." yezan came to the base and said to Yeping, who had just received the first batch of leather.


    "Don''t worry, I won''t delay your business!" although Ping''an is busy in his hands, he replied lazily in his mouth.


    Ye Zan smiled and shook his head. Of course, it''s impossible to worry about attitude with the other party. Anyway, as long as he can do things well in the end. He turned around and came to the other side of the base. There was the huge hill like head of the devil outside the sky.


    To say, although the head of the demon outside this day is much smaller than the trunk, its value is not much worse. Even, in terms of the power contained and the diversity of uses, the value of this head is even better than other parts.


    Ye Zan stood in front of the head of tianwai evil. Although he had known the appearance of tianwai evil through memory information for a long time, he still felt novelty and shock at this time.


    The demons outside this day, I don''t know whether it is because they have integrated too many blood lines or they look like this. Anyway, from the look of the head, they are very different from the "Terran".


    First of all, there was no human hair on the head of the demon outside that day. It may also be the reason why he died too long. The head looked wrinkled, numb and not round at all. In addition, on the "forehead" of the head, there are two horns bent downward, just like the sheep''s horns of argali grow in turn. After ye Zan tested the horn, he knew that it was not only a horn, but also had some characteristics of tentacles.


    Besides, the "five senses" of extraterrestrial demons are, of course, different from humans. For example, it has no nose on its face, not even holes like nostrils. Ye Zan knew from his memory that the olfactory organ of the external evil spirit that day was actually the two tentacles on his forehead. There are three pairs of tianwai devil''s eyes, two on the front "face" and one on the back of the head.


    Extraterrestrial demons also have no ears. At the position where "should" be ears, they gave birth to two dark red fluff like things, and they really use this to receive sound. Those two fluffy organs, if reduced by many times, are like the kind of wig worn by bald people. Moreover, despite the huge size of the demons outside the sky, the volume of the two fluff organs is also large, but the fluff is as soft and slender as human hair.


    Finally, it''s the mouth of extraterrestrial demons. It''s not as strange as other organs, but it''s also different from human mouth. The mouth of the devil outside the sky is more like a huge wolf''s mouth, and has wolf like sharp teeth and tusks. It looks ugly and ferocious.


    The reason why the heads of extraterrestrial demons are more valuable is that there are many "accessories" on them. For example, the six eye beads contain the unique power of extraterrestrial demons, and each of them is enough to be called a treasure. And the teeth of that mouth, as the hardest part of the body, are of course high-grade materials used to refine weapons or magic weapons.


    What is more important, or more precious, is the brain inside the head of the demon outside the sky.


    Although Ye Zan has already received the small world and the nether world into the heart core by using the heart core of the outer demons. However, this does not mean that the brain of extraterrestrial demons is useless, but can be used for other purposes. As for what the brain can be used for, whether it is alchemy or treasure refining, or other purposes, ye Zan hasn''t thought about it yet.


    The last one is the whole skull of the demon''s head. As long as those things above are removed, the remaining pure skull is enough to be used as an indestructible fortress even if it is no longer processed. However, yezan did not intend to put the skull on the war fortress as a house. His plan was to use the skull as material to build a powerful warship.


    Of course, the thing about warships is not what yezan wants to do now. It''s just a perfect plan. At the smart brain host of the war fortress, he has released this task to let the smart brain host divide computing power for calculus simulation. Quite, in the later stage of the transformation of the war fortress, he should have the energy to complete the plan.


    Ye Zan turned to the side, where a batch of cut bones were stacked. More bones were still on the treatment yard outside, waiting for the sun king to cut them. His current batch is only those who asked the other party to help further deal with the corpses of tianwai evil demons when they were separated from the Supreme Master of Daoyuan. He also needs to make some attempts to detect and process these bones to determine where the best use is.


    Ye Zan pinched the Dharma formula and offered it to the heart core, and the false Dharma phase was prompted in the heart core, so he had the ability to deal with those bones. However, he didn''t have to urge the false Dharma phase with all his strength this time, so the false Dharma phase didn''t show an indomitable appearance, but just like a giant more than ten meters high.


    Under Ye Zan''s control, FA Xiang stretched out his hand to take a bone and rubbed it with his palms like drilling a wood for fire. Under this rubbing, some debris seemed to fall out of the two palms of the Dharma phase like snow. Of course, ye Zan didn''t crush the bone, but eliminated some impurities in the bone through the power of Dharma phase.


    Part of this "impurity" is really useless, and the other part refers to substances other than bones. Although the external demons were comparable to the real immortals that day, it was impossible to really be free of impurities. Therefore, there are impurities in both the bones and the skin cut by the sun king.


    After such a simple treatment, after the movement of the Dharma phase stopped, what appeared on the spread palm was a very pure bone. The overall texture of this bone is like a mixture of gold and jade. It looks oily and crystal, but also emits a faint golden light. In terms of shape, due to the cutting position, this bone is somewhat like the large cement round pipe laying sewer.


    Although Ye Zan is on the ground, he doesn''t have to fly to see it. Only the information from Dharma is equivalent to seeing everything about the bone with his own eyes. Moreover, with the insight of his true knowledge Avenue, he can even see the deeper layer of the bone, such as the state of bone cells.


    "Really worthy of being a real immortal!"


    Ye Zan said with emotion after seeing the skeleton. In his observation, the bone cells of the bone, each cell contains the power of law, and connected together to form a structure similar to runes. This makes the bones of tianwai demons have the ability of automatic repair in addition to their indestructible characteristics.


    "In this way, those that are conducive to processing can be processed into various materials as needed. Those that are not conducive to processing, or fragments and debris, can be used as secondary materials by crushing and pressing."


    In Ye Zan''s heart, there will soon be a specific way to use these bones of tianwai evil spirits. Of course, this way of use is only used to transform the fortress, not the only or all use of bones. For practitioners, this bone is also a good refining material, which can be used to refine a very good magic weapon.


    The reconstruction project of the war fortress began in an orderly manner with the cooperation of Ye Zan, Ping''an, Sun King and other small world heroes. This project can not be completed overnight. Even with the participation of so many powerful Dharma leaders, it will take a lot of time.


    During the transformation of the war fortress, ye Zan was not buried in the small world. Occasionally, he took turns to go out for ventilation with the night peace to learn about the Shenhua domain. Even the Sun King and others are not pure coolies. During this period, they also learn how to fly in the sky and understand all kinds of "local conditions and customs" in Shenhua domain.


    As for the small world, ye Zan also moved the set of fairy palace small world to the secular world of this small world, except yuqingdao palace.


    Therefore, the Supreme Council came forward and began to build networks, rail transit and even universal education in the small world. Although this small world comes from the evil spirits outside the sky, no matter how the small world develops, ye Zan will not get merit. But he still used a lot of thought to improve the small world from all aspects, from the system to people''s life and so on.


    It can be said that ye Zan really regards this small world as his own world. As the master of the world, although he can''t get merit from the small world, he can get other benefits through the development of the small world. For example, the essence of his spiritual power separated from the nether world will accelerate the recovery speed after the development of the small world becomes more and more prosperous.


    In addition, those "Heroes" in the small world do not only have the level of Dharma phase, but also have various levels below. And those "Heroes" are naturally of certain value to Ye Zan, the master of the world.