Night cannot affect the vision of cybernetians. The harsh climate of Mars and the low temperature at night also have little impact on Decepticons such as sun Cheng, Adam and Prometheus.


    "This is the place I chose for the first Mars base!"


    Prometheus glanced at the ground in the canyon. Suddenly, he seemed to have found something. He went over and squatted down, grabbed a handful of fine sand, and scanned it with two beams of light in his eyes for a moment. He looked a little excited: "Master, the ordinary soil on Mars also contains a very high proportion of magnesium sulfate, iron oxide and carbonate. After appropriate reaction and refining, we can obtain a large number of minerals."


    Adam picked up a red stone and checked it, "what a treasure star!"


    "It is indeed a treasure star!"


    The smile on Sun Cheng''s face could not be suppressed. After looking around the surrounding Canyon for a moment, he restrained his smile and said in a deep voice: "I can''t stay on Mars for too long, so get ready to start! Prometheus, you explore the mineral veins around, I''ll go to the cave with Adam first, and I''ll wake up some engineers later and let them come to listen to your arrangement!"


    The news that sun Cheng has mastered the mysterious space bridge technology and can put a large number of resources into a mysterious space is no longer a secret inside base 2.


    Because the legendary space bridge technology, even in the Senate period at the peak of Cybertron civilization, only a few people mastered it.


    After all, this involves the field of space. Even the Cybertron scientists who have studied in the fields of space physics and quantum mechanics for a lifetime are very difficult to get started, let alone the Decepticons engineers under sun Cheng.


    So Adam and Prometheus, two new Decepticon engineers, only heard some rumors from their predecessors.


    Although they were curious about how Sun Cheng hid massive resources and carried them with him, they had no clue.


    Prometheus dared not question his command, but bowed slightly and promised, "everything is as you wish, master!"


    Sun Cheng took Adam and walked to the underground cave hundreds of meters away, which was like a devil hiding in the dark.


    This underground karst cave is located in the middle of sailor Canyon, only more than 100 kilometers away from the main crack and several bifurcation cracks of the canyon.


    In the afternoon, sun Cheng and his crew took a full three rounds of inspection in the sailor''s Canyon on the experimental spaceship hope, and then determined the location.


    The average depth of the sailor Canyon is about 5.47 kilometers and the average width is about 267 kilometers.


    In the Grand Canyon, which was formed for unknown reasons, sun Cheng and his team visited it three times in the afternoon and found countless caves and caves.


    However, they chose this place because it is located in the middle of the Grand Canyon, and the nearby mountains contain more hematite than other areas.


    Choosing this place is not only convenient for mining in the future, but also relying on the hard mountains to transform the nearby underground cave selected by them into a base, which will save a lot of trouble.


    Before he came to the cave, sun Cheng didn''t hurry in.


    The armor plate at his chest automatically cracked, and a small unmanned reconnaissance device quickly flew out and flew towards the depths of the cave.


    Sun Cheng took Adam with him and walked in slowly.


    The uncanny workmanship of nature is always particularly magical.


    Sun Cheng originally thought that the underground cave where he first established the No. 2 base in Brazil could be regarded as a gift of nature.


    However, compared with this cave on Mars, it is much worse.


    The entrance of this cave in the middle of sailor Canyon is extremely spacious, no less than 20 meters high, with some narrow, only about 78 meters, but the cave is extremely deep.


    After walking a little 20 or 30 meters into the cave, you can see that a huge rock blocks most of the way forward.


    Adam can easily turn over, but Sun Cheng takes a little time.


    After about that roadblock, I felt suddenly enlightened not far away.


    An irregular space with a height of no less than 60 or 70 meters and a total area of almost 7000 square meters appeared in the vision of sun Cheng and Adam.


    "Yes, it saves us a lot of effort!"


    This natural cave alone can save sun Cheng and them a few days of work.


    Of course, in the follow-up, it must be widened, reinforced and shockproof. Finally, like the main control center of base 2, the karst cave is covered with metal with a sense of science and technology, and it can no longer see the original appearance.


    But what does it matter? He wants this base, not to develop tourism.


    Looking at the spacious space, sun Cheng thought and waved to Adam to stop. He took a few more steps forward and took out the sleeping compartments of more than a dozen dormant engineers from the spherical space.


    "Adam, these engineers will be given to you to wake up. Some of them will be arranged to Prometheus to explore nearby mines with him and sort out more and more detailed information as soon as possible. The other part will be taken by you to design this cave!"


    "Yes, master!"


    Sun Cheng went to a corner of the cave and took out a batch of Engineering robots from the spherical space.


    Soon he walked deeper along a hole not far away.


    This underground cave is much more than expected. The UAV he sent is still transmitting more information in the cave.


    The cave where he and Adam had just stopped for a short time had an outward passage deep and on both sides.


    However, two of the holes were too small for sun Cheng to drill through, so he gave up exploring on both sides.


    But his drone soon detected one of the paths, and the results were very satisfactory.


    Although the entrance and passage of the cave extending to one side are very small, after walking more than 200 meters deep, there is a huge karst cave with a length of more than 370 meters, a width of more than 640 meters and a height of more than 50 meters.


    Another passage that sun Cheng couldn''t get into was soon confirmed by UAVs. There was another magic inside. The passage was nearly five kilometers deep. In addition to the small entrance, there were scattered caves of different sizes, and one of them extended 600 or 700 meters down, which was quite wonderful.


    On the contrary, sun Cheng stepped into the cave alone. It seemed spacious. In fact, he walked inside for less than two or three minutes, and he saw the end of the passage. There were no caves or other miracles, which made him a little disappointed.


    Soon he turned back to the original cave again and looked at Adam who had begun to wake up the engineers and command them to get busy.


    Sun Cheng went forward and copied the information of the three caves photographed by the UAV and seen by himself to Adam.


    After digesting the information of the cave, Adam looked at the channel connecting a huge space with a total area of more than 200000 square meters, and ordered the engineers to control the engineering robots and begin to broaden and dig there.


    Sun Cheng''s spherical space also stores a large number of materials and robots, which need a larger space for placement.


    A line of Decepticons, who had just arrived on Mars for a few hours, immediately began to get busy.


    ……


    ps：


    There should be nothing tomorrow. It can be renewed and paid off.