Rob's heart skipped a beat. How could the altar's operation produce such big fluctuations? Why didn't Cabritt tell him about the situation? Doesn't this tell everyone that they are here? Thinking of this, Rob glared at Cabrit. It was impossible for him not to know what caused the strong fluctuations in the operation of the altar. This showed that he deliberately concealed this situation. Sensing Rob's dissatisfaction, Cabrit's soul jumped and said subconsciously: "It is impossible to operate the altar silently. They are always monitoring the situation underground. This time was chosen so that the barbarian invasion could Spread their forces, right? As long as the altar operates to its maximum and the energy field is released, we will be safe." Of course, Rob does not expect to be able to operate the altar silently. The fluctuations emitted by the magic tower on the ground are always monitored. When they land underground, any slight movement they make may alarm the humans on the ground. Rob is dissatisfied because Cabritt's words are not truthful and always hides some key content from him. This is what makes Rob dissatisfied. Now he doesn't know whether to believe this undead. Fortunately, he still had a backup plan. Rob took a deep look at Cabrit and turned his head to look in the direction of the cave entrance. Outside the altar, there are nine God-of-War-level constructs standing quietly. Except for Eleven and Twelve, who were sent to guard the entrance of the cave, all the remaining God-of-War constructs, including No. 7, are here. The moment Rob turned his head inside the altar, the four God of War constructs from thirteen to sixteen immediately received the order and strode toward the entrance of the cave. The fluctuations caused by the altar must have been detected by the humans on the ground. A large number of strong humans will definitely rush down next. The two God of War constructs alone cannot delay it for long. So we might as well arrange our troops in advance. So that you don't have to worry when you arrive. Seeing that Rob did not pursue this issue further, Cabrit secretly breathed a sigh of relief and continued to turn his attention to the Altar of Movement. But even he himself didn't realize it. He seemed to be afraid of Rob and didn't want to make Rob lose his temper. ¡ ¡ In a tunnel connecting the city lord¡¯s palace, Fulisuo took long strides and moved quickly in the cave with a light and dexterous body. The speed did not look like an old mage who was old and frail. He is a great light magician, and this type of magic is not suitable for use on the battlefield. It is true that light magic can be very sophisticated in both offense and defense for a mage fighting alone, and it is also unique in healing. However, the power of area-of-effect killing magic is very weak and is not suitable for use on the battlefield. He is a great magician, and it is impossible for him to waste energy on the battlefield to save small soldiers. So he didn't go up to the city wall to sit down like Audrey, but stayed in the control tower. Not long ago, the magic monitoring department reported back a special message that there were abnormal changes above the cave where the altar is located. This abnormality was not very obvious and disappeared quickly. It was originally a situation that could be ignored. Fuliso did the same thing and ignored the situation on the spot. But after handling several other matters, Fuliso discovered that the report seemed to have taken root in his heart and could not be removed, giving him a vague feeling of uneasiness. After hesitating for a few minutes, Fuliso decided to go down and have a look. In order to study this underground ruins faster and better, Fuliso organized a group of earth magicians as soon as the altar was discovered, opened some caves, and connected the fastest path from the city lord's palace to the altar. Along the passage of the cave, at his speed, he could reach the altar in only ten minutes. A faint light shrouded his body, making his body as light as a feather. With a tap of his toes, he jumped out more than ten meters. At this moment, a strong wave spread from deep underground. Fulisuo is very familiar with this kind of fluctuation. It is the fluctuation caused by the operation of the altar. During this period, he gathered dozens of experts, scholars, mages and priests to study together, but he was still unable to reproduce this fluctuation. With so many people gathered together, the altar couldn¡¯t operate. Now that no researchers are there, it suddenly started to operate. Could it be that the undead spirit from before reappeared on the altar? The brightness of Fulisuo's light increased greatly, and his speed immediately increased by half, streaking through the dark cave like a meteor. When he rushed to the entrance of the cave, he saw two steel giants blocking the entrance. Looking past the two steel giants in front, there are two structures of the same type blocking them behind. Further behind, there are two more figures vaguely visible. Fulisuo's face suddenly darkened. At least six steel structures were only used to defend the entrance of the cave. There were more in the cave.?'s steel body? Such a large number of advanced constructs must be owned by a master constructor. Could it be that the undead that escaped before was still a master constructor? Or maybe a certain construction master broke into the altar? Then, Fulisuo's eyes fell on the feet of the Steel God of War. The bodies of the five dead guards were not cleaned up. Two of them were stepped into the ground by the big feet of the steel structure, leaving only two hands standing stiffly. Shit. The guard at the door is dead, so the guard in the cave must be in danger. The person who broke into the cave must be an enemy rather than a friend. Who is it? Which constructor dares to be the enemy of Black Iron City. A fierce murderous intention surged into Fulisuo's heart. His body rushed forward and suddenly sprang out from the corner at the end of the passage, streaking through the darkness like a meteor and shooting straight towards the entrance of the cave. The appearance of Fulisuo immediately alerted the God of War construct blocking the door. Rob in the cave altar felt it and immediately switched his mind to No. 11 at the front. As soon as the transfer was completed, he saw a ball of light shooting towards him from the end of the channel. Subconsciously, Rob activated the composite edge shield and raised it in front of him. Fuliso, who was in front of him, put his index and middle fingers together at this moment and pointed forward. No matter how strong the steel structure is, it has its weaknesses. Their joints, their eyes and ears and other sensing parts, and the weak points in the joints of their outer armor are all the weaknesses of the structure. Fulisuo has been in battle for a long time, so naturally he will not be foolish enough to confront the construct head-on. When he strikes, he chooses the waist joint of the nearest construct. A beam of light shot out from between Fuliso's two fingers and shot straight towards No. 11. The light system and the electric system are both known as the fastest magic systems. Once the magic is cast, no object in the world can dodge it. "I just didn't expect that Rob would subconsciously activate the composite edge shield in advance. The moment before the beam was shot, the shield was already on his body. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? The fluctuations of violent energy exchanges stirred up a sound in the narrow cave. The newly unfolded composite rib shield turned from transparent to yellow, then quickly to red, and then exploded with a crisp pop. The remaining power of the beam hit the iron shield. Rob only felt a huge force coming in, and his hands in front of him almost separated. The huge impact made his body fall backwards. None of the joints in his body could buffer the momentum. They were squeezed together instantly, causing the huge body weighing dozens of tons to slide back a few steps. Bit. Rob turned the shield over and saw that the several-inch-thick ferrous iron shield had sunk into a pit the size of a fist and more than an inch deep in the center. White smoke continued to flow from the pit. rising. Rob was stunned for a while. This was an iron shield. It was almost the strongest metal that human civilization could produce. It was almost penetrated. Moreover, even though the energy shield blocked most of the attacks, it was still damaged. The remaining force is like this. If the energy shield is not turned on, wouldn't it be possible to directly penetrate the shield? What is it about this attack that is so terrifying?