With a dodge, Su Chen leaped over the defensive line of the tower base, appeared directly in the tower, and nearly collided with a feather clan. Because he was still in a hidden state, the other party didn't see Su Chen, but felt a gust of wind blowing on his face. He instinctively waved his hand, seeing that he was about to slap Su Chen's face, Su Chen squatted down, avoiding this one. The Yu clan had already moved forward, Su Chen had no choice but to retreat backwards, and then rolled to the side, avoiding this foot. He didn't startle him in a cold sweat. Seeing that Yu clan passed by him, Su Chen slowly stood up and walked inside. The bottom layer of the Chaos Demon Tower is actually a huge source array, each room is a source array operating point, gathering huge energy. What surprised Su Chen was that the most people here were not the Yu clan, but a long-necked wise clan with three arms, the craftsman clan. Craftsmen are born craftsmen. They have three arms. The third arm is born behind the back. They can work with both arms from top to bottom. Their hands are naturally extremely flexible, and their fingers can even bend back joints. They are suitable for all kinds of fine work. They are also talented and clever and love to create, so they are a natural race of craftsmen. During the period when the Austrians were strong, the craftsmen were even stronger than the five wise tribes, but the craftsmen were not good at management, and their free and undisciplined character kept them from becoming strong. The Austrians were better when they were there. With the Austrians as the bosses, they just need to be vassal races to give full play to their strengths. After the Austrians are over, the status of the craftsmen has plummeted. In the end, they can only rely on the feathers who have the strongest demand for the craftsmen at the time. Clan, during this period also experienced several betrayals and betrayals. Nowadays, as a race, the craftsman clan does not have its own land, but depends on the major forces to make a living, among which the feather clan, the spirit clan and the sea clan are the main ones. The Terrans themselves are excellent craftsmen, and they don't have much demand for the craftsmen, and the Moo are born without knowing how to respect technology. They obviously need the craftsmen the most, but they admire the force of the craftsmen but they can't give them the respect and status they deserve. Nowadays, there are a large number of craftsmen in this Chaos Demon Tower. They crouched beside each and every weird objects, containers, stoves, and source arrays, constantly controlling, recording, and making weird calls from time to time. Some Feather soldiers listened to their sharp shouts and took notes one by one. It can be seen that the craftsman clan is the key to maintaining the operation of this huge demon tower. The source array inside the tower is very large, but it is basically controlled by "technical personnel", and there are no powerful characters in sight. So Su Chen was unimpeded all the way, except for the moment he first came in, he didn't encounter any danger in the following. Walking at this moment, Su Chen saw a huge room in front of which countless craftsmen and feather tribes entered and exited, knowing that it must be the key to this place. Su Chen walked over and suddenly saw a huge pillar directly below, a large swath of blood-red brilliance surging out of the pillar, and countless craftsmen were busy surrounding the pillar. At the top of this hall, one could still vaguely see a purple sky crystal hanging high in the sky. The Purple Sky Crystal is an extremely rare soul crystal. Su Chen has seen it once, and a single as big as a little finger is worth millions of source stones. But the one in front of me was the size of a human head, and this single piece of Purple Sky Crystal, I was afraid that it would not cost hundreds of millions of source stones. The most important thing is that there is no market for this item, there is no place to buy it, and I don't know where the Yu clan got it. At this moment, a purple smoke appeared on the purple sky crystal from time to time, and Ruo Ruo Wu's roar could be faintly heard, carrying an indescribable huge pressure. The horror brought about by this scream was extremely powerful, and even Su Chen felt his mind swaying at that moment, with a sense of boundless fear, wanting to yell. Fortunately, he mobilized the strong wall of the soul for the first time, and then he resisted the huge terrifying power contained in the cry, and sweat was shed from his forehead. There was no surprise and no danger all the way, and I had reached the core area, but suddenly came this way, it is impossible to say that it is impossible to not be surprised. This should be a purely soul-level attack, but not a conscious attack. It was completely caused by the majesty of a powerful existence instinct. What kind of life can have such terrifying majesty? The answer may only be this wild beast. But isn't this wild beast demented? Why is there such an angry roar? Su Chen felt faintly that he seemed to have touched a bit of the mysterious edge of the Chaos Demon Tower. However, there is one thing that needs to be paid attention to. This roar makes him feel unbearable. How can those relatively ordinary craftsmen and feather clan resist? He carefully looked at the craftsmen, and saw that each craftsman carried a strange accessory, exuding the fluctuations of if there is no such thing, but it just resisted the soul shock brought by the afterlife. "It turned out to be like this." Su Chen understood a little. It seems that these accessories are not only a sign of identity, but also a method of identifying intruders. If anyone sneaked in here without knowing it, and was shocked by the soul of the desolate beast, I was afraid that it would be frightened at that time. However, Su Chen had spiritual barriers, but he escaped the catastrophe. But after passing this level, it seems that there is nothing to hold him back. Thinking of this, Su Chen boldly entered the hall. Unexpectedly, as soon as he stepped into the room, he saw the light from above, but Su Chen's figure appeared automatically. In the busy hall, it is impossible for a person to appear out of thin air without attracting attention. For an instant, countless light fell on Su Chen, and at the same time he showed a look of uncertainty. Su Chen was also shocked. He didn't expect that after the shock of the soul, there was real light in this room, and there was no way to hide any disguise under this real light. Now that it has been discovered, should we just kill them all? Su Chen was thinking this way, but saw a craftsman bend himself and said, "Heyang Dayu?" Huh? Su Chen stunned, and then noticed that the real light not only cracked his concealment, but also illuminated the storm wings that had hidden him behind his back. Therefore, in the eyes of those craftsmen, it is a Yu clan who appears here. The internal unity of the Yu clan is extremely high, and the defense of the Chaos Demon Tower is not in line with the outside. Maybe there is still some big Yu coming here today, so the craftsmen naturally misunderstood Su Chen and regarded him as a high-level feather clan. As for Su Chen's appearance, it can only be understood that everyone has their own quirks, and this Dayu may just want to try the demon tower's defense level. Thinking of this, Su Chen coughed lightly: "Well, everything is okay?" The craftsman replied respectfully: "Back to Heyang Dayu, the chain of shallow sea has been replaced, and the total number of deep source crystals is 31. Do you want to hand it in?" Su Chen was dumbfounded. Su Chen didn't know the chain of the shallow sea, but Su Chen knew about the deep source crystal, which was a very peculiar source energy crystal. It is different from the source stone. The source stone is simply a source of energy storage material, and it is rich in impurities, so it can only be used for regular repairs, not suitable for cultivation. Deep source crystals are pure source energy crystals that can be used for practice. Of course, if this material is used for cultivation, it would be a waste. In fact, it has a great auxiliary meaning for the cultivation of many source skills and arcane arts. It can also be used as a special material to make source arrays, puppets, source artifacts, etc. Special source energy items. If a source device is inlaid with treasures such as deep source crystals, the power will not increase by a little bit. The deep source crystal is unique to the feather clan and never shot. The only way for other races to obtain Deep Source Crystals is to kill Feather Clan strongmen and obtain undamaged Deep Source Crystals from their source energy items. Because of this, the deep source crystal has always been a sky-high price in the human kingdom, and it has never appeared on the human purchase list. At this moment, listening to the craftsman clan asking him if he had thirty-one Deep Origin Crystals, whether to hand in them, Su Chen was also happy. Is there such a good thing? He was about to nod and say hand it over, and then he thought that there are so many good things in his hand, such as the blood of the wild beast, and there is no chance to use it, and it is not bad for this deep source crystal, and he said: "No. Urgent, I'll look around first." He wanted to see how it works first. After hearing this, the carpenter clan froze for a while, and asked, "What does Dayu want to see?" Su Chen's eyes fell upon him, and a strange feeling suddenly appeared in his heart. Thought, he said: "You brought me here to look at the operation of the bar, what you call.?" That Carpenter Family bow replied: ". Small Carpenter cloud workers" , "cloud work right, you take me around Here. Motoyu came here for the first time, so naturally I should take a good look at the operation here." "...Yes!" The craftsman hesitated, and finally took Su Chen to observe everything here. This is the core center of the Chaos Demon Tower, and all secrets are naturally presented in front of Su Chen's eyes. Just being able to see and not understand is also an urgent matter, so along the way, Su Chen deliberately or unintentionally asked the craftsman some questions, and got some information from the side. This craftsman was also acquainted, so he answered whatever Su Chen asked. So Su Chen soon understood his biggest doubt all the time, or the one thing that all the intellectuals couldn't figure out-why does the wild beast live? Su Chen had also had many speculations, and the facts proved that one of his guesses was correct. The answer is the chain of shallow seas, which is the endless sea of power. The endless source force sea is the source of the original land, located in another layer of space, but through the mysterious space crevices constantly infiltrating the original force into this place, forming a cycle with the original land. Some people say that the reason why the source power of the original continent is lacking is because the ocean of source power is constantly moving, and it is getting farther and farther from the original continent, causing the source power cycle to become weaker and weaker. Therefore, many people are also exploring the sea of source power in order to gain strong power, and therefore they are quite knowledgeable. It's just that things that involve the spatial level are never easy, so even occasional gains are difficult to promote. And any existence that can use the power of the endless source of power is great. Sky City was set in a fixed airspace in an attempt to obtain a steady stream of energy from the endless source of power. Although this was a failed experiment, it still gave the Yu clan a lot of relevant knowledge. When the Sky City couldn't move, some Yu clan suggested that since you already have some knowledge about extracting the source of power from the sea, why not use this knowledge to create another Sky City