The detection tool is a high-tech device similar to a hovering drone, which can be opened and entered into the survey task to carry out the investigation and feedback on the relevant situation on its own. The situation within kilometers underground can be analysed, even the material content and spatial layout of the rock and soil layers. This is undoubtedly the strongest weapon for searching for cities buried in the ground.

In less than an hour, the detection equipment fed back information that there were indeed large areas of hollow space under the desert in front of us, which showed that the city occupied a much larger area than the egret imagined thousands of years ago. You know, the city is buried in sand, and many places are not hollow. The hollow hole alone has a diameter of sixty or seventy kilometers, which shows how large the original city was.

"The nearest cavity in front of me is about three kilometers ahead. I didn't expect to find the entrance so soon, so let's go now?" Zhou Qian looked at the feedback and said with some excitement.

Zhou Qian is participating in the adventure for the first time, and naturally feels more excited than the others, Qin Yu and Tu Miaoyou have explored the ancient ruins in their own world with the egret, not to mention the adventure of Nina and the egret, these three people are much calmer.

"It would be reckless to go straight in. Discovering the city is only the first step, you also need to send an excavation robot to see the situation inside, the terminal equipment can feedback the image, see what is in the city, such a large number of people and horses are exploring in the desert, it is difficult to guarantee that we will not find our actions, so we must be careful in our actions. Egret shook his head, and pulled out a few digging robots with drills from his personal space. These robots are also high-end products in the tech world, with their own intelligent programs and a certain ability to dodge monsters.

Robots used in Mecha Hell activities are useless if they don't have the ability to dodge Starry Sky Beasts or concoct Gene Beasts. Therefore, in the setting, the robot can avoid moving objects, and has the ability to judge the danger on its own, which is much more convenient than personnel control.

With the actions of these robots, Egret and the others can completely open up a passage farther away, and there is no need to run to a three-kilometer location to wait. The speed at which these robots open up underground passages is amazing, three kilometers to open up, at most it takes more than ten minutes, although the terrain of the desert is easy to collapse, but there is a chemical fog of condensed sand in the world of science and technology, which is not a problem at all. The excavation robot will take this into account and will open up a very sturdy road.

Egret and the others sat in place, eating snacks and waiting, and after half an hour, a picture suddenly came from the terminal, which was that the robot had arrived at the designated place and had begun to explore.

This attracted several people to the terminal screen, staring at the picture from the robot, Gu was amazed. The city of a thousand years ago was incomparably splendid, and the peak of the building supported the desert, and a clearing was forced to be pushed out, and the scope was not small. Compared to the city in the oasis now, it is completely the difference between a big city and a small town.

At the moment, the building that these robots enter is a large building, and from the inside, it looks a bit like the city hall of the city. This is also said in the past, after all, except for the city hall, it is rare to make such a big hole with the building.

"Tell the robot to search the hall, according to the architectural information of the ancient city, there should be a map of the overall layout of the city. Zhou Qian said suddenly. "With a map, it's much easier to explore. The most important thing is that we can directly find the location of the auction house. ”

Thousands of years ago, the city also had an auction house, and the reason why we wanted to find an auction house was because there was definitely a treasure trove of items that needed to be auctioned. The auction of items is not a one-time clean process, but a split auction, which can increase the value of the auctioned items and sell them for a higher amount of money. Second, if there are too many items, the auction time needs to be sorted, and it will not be completed at one time.

This is the main purpose of the Egret team, with advanced exploration tools, if you can't get the biggest piece of the cake, then it will be too wasteful.

Sure enough, on the column of the management desk in the center of the hall, a city plan map was engraved. The various buildings are clearly marked on it, and in addition to the central hall, there are a number of key areas.

"Of course, the auction house should be put first, but the city lord's mansion is also very important. At that time, many city lords would put their wealth in the treasury of the city lord's mansion, and if we collected the treasures of these two places, there would be no financial problems for us to advance to high-level professions in the future. Tu Miaoyou continued.

"Don't think things are so rosy just yet. Don't you think there's something wrong with the feedback here?" said Egret with a frown.

"What's the problem?" Qin Yu asked a little sluggishly.

"Have you forgotten why the city died a thousand years ago? The war of monster invasion is no joke, when the city's defense system went wrong, and almost instantly, the whole city was swallowed up by monsters. Judging from historical records, there should be a lot of traces of battles in this city. The messiness of the central hall illustrates this. Egret analyzed. It should be certain that this hall is very chaotic, not only because of the fact that time has passed, but also because of the confrontation that took place in the first place.

Both Egret and Nina are very experienced in exploring such ruins, so when they saw the feedback screen, they immediately discovered a serious problem.

"There are no bodies. The hall has been battled, and it looks very miserable. But there were no bodies. Nina frowned and gave the answer. "I'm afraid that's not a good sign. ”

"Didn't you say that the monsters attacked the city, could it be that they were eaten all after death?" Tu Miaoyou gave a non-thinking answer.

"Even if it was eaten, the hall would be too clean. Some of the severed limbs are easy to infer that they were eaten, but there is nothing clean and clean, so I'm afraid it's hard to say. ”

"Cleanliness can also be a problem, how do you say that?" Qin Yu then asked.

It was Zhou Qian who answered her, and the woman obviously thought of that possibility, "The reason why it is not a good phenomenon to say clean is because there is a monster in the monster book that is born after the death of a creature that is cursed." ”

"The undead. The egret followed Zhou Qian's words and gave an answer, "Damn, it was probably the undead monster who attacked this city in the first place!"