Maxim the Great''s laboratory is also located in the sailor''s Canyon.


    It is more than 300 kilometers away from the central main control base and is located below a section of reddish brown stone wall.


    If you don''t get close, it''s easy to ignore the hole.


    It''s a huge stone gate hundreds of meters high and half a hundred meters wide. Because it looks like reddish brown, it''s a little far away, or if you don''t look carefully, you''ll ignore it and think it''s also a stone wall.


    Prometheus was the only Decepticon engineer who came with the team. He also took several technical officers and two teams of engineers.


    After arriving at his destination in four armed transport ships, Prometheus came down from the transport ship and checked in front of the mountain wall.


    The huge stone gate, which can only be seen clearly after approaching, is also his key inspection object.


    After examining it carefully, Prometheus looked dignified, "this is not a stone!"


    He looked back at Sun Cheng. "Commander, this door is a metal I''ve never seen before. It''s very strange. It has some characteristics of stone, but it''s metal in essence."


    Prometheus searched his database carefully before he found a more suitable adjective.


    "It is very similar to the concept of a pseudo metal proposed by us internally!"


    Although sun Cheng is not a scientist now, he is by no means inferior to any Decepticon engineer with the accumulated knowledge in the past.


    Wen Yan also stepped forward, slightly checked the stone gate in front of him, and nodded slightly.


    Indeed, as Prometheus said, the stone gate is very strange. The inspection data show that it has roughly the same composition as the surrounding stone wall, but its hardness is dozens of times larger than the surrounding stone wall.


    And even with his search ability, he can only vaguely observe an open channel behind the stone gate, and can''t explore more things at all.


    However, sun Cheng didn''t gain anything at all. At least after he explored a distance behind the Shimen, there was no strange substance suspected of mimicking metal.


    "Blast in from the side and open a 120 meter channel forward. You don''t have to touch this door. If it''s safe, you can send someone to study it later!"


    Sun Cheng thought for a while and made a decision in his heart.


    Then he came to a nearby mountain wall. He pointed at two places on the mountain wall respectively. After leaving two marks on the mountain wall with strong power, he ordered Prometheus to carry out blasting operations with the two teams of engineers he brought.


    "Yes!"


    When Prometheus received the order, he answered and arranged work for a team of engineers.


    Accompanied by an explosion, about half an hour later, a passage about 20 meters high and more than 10 meters wide was violently dug out.


    Knowing that the passage was completed, sun Cheng went to the aisle and released two electromagnetic waves in his eyes. He soon saw all the situation in the aisle.


    "Well done!"


    A passage of 100 meters long was opened by Decepticon engineers with extremely accurate blasting techniques.


    Although it is only a temporary channel, in order to prevent the channel from impact collapse, engineers also erected some metal support columns in the channel.


    Decepticon creation, trustworthy.


    At the moment, he was going to enter the channel first. As soon as he got to the entrance, sun Cheng suddenly thought of something. He stopped and ordered: "leave several ordinary soldiers here. Once we encounter danger, immediately blast the channel and inform the Mars base to prepare for defense!"


    He has other means to protect his life. In the most dangerous case, he can also save his life by giving up the body that has just run in.


    This is also why Sun Cheng is ready to take risks this time to test this unknown laboratory.


    If the situation is irreparable, he just hopes to preserve the Mars base as much as possible.


    It''s no wonder that sun Cheng didn''t plan for the worst. He once faced the Fallen King. One of the former 13 senators of Cybertron in the state of serious injury still has far more combat effectiveness than the leader level.


    Although according to the information of the thirteen elders he had, Maxim the great was not a veteran who was good at fighting.


    But how could the super leader have no means when he faced the joint pursuit of several elders and still escaped for countless years without being eliminated.


    Therefore, sun Cheng is very worried about the laboratory that emperor Maxim left on Mars.


    He is responsible for issuing orders. Specifically, sun Cheng is not responsible at all.


    The senior soldiers who had led the team walked to the back and ordered four ordinary soldiers to guard at the entrance of the channel just blasted.


    Prometheus and his two teams of engineers followed the rear of the team.


    They are responsible for picking up leaks, that is, after the soldiers in front ensure safety, they search for all valuable things in the laboratory.


    Sun Cheng took the lead and soon came to the end of the temporary channel.


    There, only a thin wall from the corridor at the entrance of the laboratory was not blasted.


    "Blow it up!"


    With his command, the engineers who had already drilled holes in the mountain wall and buried explosives immediately stepped back and detonated the mountain wall.


    "Boom!"


    With a burst of rock splashing, sun Cheng, who stood in the front, was inevitably hit by the splashing stones, sending out crackling bangs.


    However, this kind of damage, for him now, is just like sand and stone falling on humans, which is completely worthless.


    Take out the chopping knife and hold it tightly in your hand.


    Sun Cheng stared warily at the hole just blasted out by the engineers in front. The dust and darkness could not affect his eyesight at all.


    When it was determined that the newly blasted hole could let himself through, he did not continue to wait for the engineers to clean up first, so he took the lead in holding the chopper knife.


    As soon as he entered the aisle, a cold wind made sun Cheng feel a little uncomfortable.


    "The temperature is close to minus 30 degrees Celsius!"


    Sun Cheng looked down at the surface of his arm and began to condense light frost. He immediately reminded him in the communication channel: "if the temperature is abnormal, I suspect that the laboratory may be built on the underground ice lake. Pay attention!"


    Although the cybernetians, like the earth people, do not like extreme environments, their special life forms make them more adaptable than the earth people in the face of harsh environments such as ultra-high temperature or ultra-low temperature.


    Holding the chopping knife tightly, sun Cheng took the lead in walking towards the depths of the channel. In his eyes, the bright blue light is more eye-catching than usual. He has been trying his best to explore all the surrounding conditions, including the composition of the stone wall, the temperature of the channel, looking for traps, and catching possible dangers at any time.


    Until he walked out of the channel, he didn''t find any abnormality.


    However, after walking through a zigzag passage thousands of meters deep, another gate similar to the entrance appeared in front of sun Cheng and them.