Late at night, early in the morning.


    An extremely rare locomotive, such as lightning, runs at top speed on the empty streets of Nandu.


    The rider of the locomotive wears a black tights that is not prominent in the night. Through the curve of the tights, it is not difficult to see that this should be an adult male.


    More than twenty minutes later, the locomotive came near huwangling.


    Sun Cheng slowed down and deliberately wandered around before quietly driving into No. 1 base.


    "It should be safe!"


    He took off a pair of wide glasses on his face. On the lens of his left eye, a radar scanning interface was displayed.


    This is a small prop he made by confusing the body when he was in the [TRANSFORMERS UNIVERSE]. It is a small-scale electromagnetic wave scanner that can detect electromagnetic waves within a range of 20 meters centered on himself.


    However, sun Cheng was not careful. Since he began to contact the state, although he broke some monitors placed by the national security bureau near his house last time, the other party never came close to monitor his actions again.


    However, from the information collected by revenge and subminiature spy, there are at least seven teams around his house and company to monitor him.


    But the other party had a tacit understanding to pull the surveillance far beyond the scope that would not affect his normal life and office, so sun Cheng pretended not to know.


    With so many people staring at him now, he had to be cautious.


    In fact, a few days ago, sun Cheng let revenge rent a rental house not far from his villa through the Internet.


    Tonight, he used an optical invisibility cloak to avoid the sight of those who monitored him. After coming out, he went directly to the rental house.


    Here in the rental house, a locomotive that is also purchased through the Internet has already stopped here.


    Sun Cheng doesn''t have a motorcycle driver''s license, but it''s not too difficult to get started.


    The previous two nights, he had secretly rode a motorcycle and ran hundreds of kilometers on the road late at night. Unfortunately, he didn''t treat him.


    After determining the surrounding security, sun Chengcai took out an ordinary looking key from the spherical space and opened the iron door on a high fence protecting the periphery of base 1.


    He parked the locomotive behind the iron door. After carefully locking the iron door, he glanced at a camera installed in a hidden position not far away.


    Immediately, sun Cheng said, "it''s me, defend and lift the alert!"


    From the hiding place, a metal spider the size of a child doll quickly climbed out. At the same time, the cold mechanical sound also sounded with the emergence of the metal spider.


    "Yes, master."


    Open and lonely hills, familiar and strange places.


    Although in the real world, sun Cheng didn''t come here again for more than a month.


    But if you really count it up, plus the time he spent in the transformers universe, it has been more than half a year.


    More than half a year is enough to make many familiar things feel strange when they see them again.


    Although sun Cheng is experienced, this familiar and strange feeling still makes him particularly uncomfortable every time.


    A camouflage net has been installed at the entrance to base 1, which is a special equipment made with optical technology.


    It can simulate the surrounding environment and perfectly hide the entrance of No. 1 base. Even if someone approaches one meter away from the entrance, he can''t perceive its secret as long as he doesn''t touch it.


    I haven''t been here for some time. If there is no metal spider to lead the way, even sun Cheng has to look around the entrance for a while to find the hidden hole.


    Even if he learned the magic of going through the wall, his figure hit a mountain wall at the foot of the mountain, and then entered a long passage.


    The lighting equipment in the passage is not fully turned on, so the light looks a little orange.


    Sun Cheng didn''t care much about this. He went straight to the depths of No. 1 base.


    Six or seven minutes later, I came to the main control room of the base, which is nearly 100 meters underground.


    "... master, defend to report to you!"


    In the main control room, he changed into a defender of combat form and bowed respectfully to him.


    Sun Cheng nodded, "you worked hard some time ago. I just noticed that two more workshops have been built!"


    A week ago, when he realized that he might be watched, he had ordered the defense to temporarily stop the construction of base 1.


    However, he obviously underestimated the ability to defend the hundreds of robots he brought back.


    There are several underground factory workshops in the No. 1 base that were originally stopped in the planning. Now two workshops are nearing completion, and most of the construction of another one has been completed.


    Don''t think it''s built underground, just because it''s small.


    Although the No. 1 base is far less than the No. 2 base in the [TRANSFORMERS UNIVERSE] world, with a total construction area of more than 12 square kilometers.


    But after all, this is the most important rear base in the main world originally planned by sun Cheng.


    Therefore, in the underground factory area of the base, the area of each factory workshop will be different due to different planning and future targeted production tasks.


    For example, the two workshops just completed in the factory area of No. 1 base, of which the larger workshop has a construction specification of 50m * 30m * 5m, which will be used for the production of medium and large equipment parts in the future.


    Another slightly smaller workshop, with a construction specification of 40m * 20m * 5m, is a maintenance workshop for industrial machines.


    Because the base is built underground, it is not simply to dig out a huge space with a robot, then build a layer of bricks and stones on the surrounding walls, and then apply cement.


    Huwangling is not far from the Yangtze River. After all, it has rich underground water systems.


    When starting the construction of the underground base, we not only need to deal with the problem of underground water seepage, but also need to consider the possible earthquake and military attack in the future.


    It''s no exaggeration to say that according to the standard of No. 1 base, if such a workshop is handed over to the human construction team for construction, it won''t take more than a year.


    Two of them were built in less than a month. At the same time, the built area of base 1 has reached more than 30000 square meters, which shows the efficiency.


    The defender said respectfully again, "the last batch of construction robots sent by the owner helped a lot. Their efficiency is nearly twice that of the original industrial robots."


    Construction robot is a special robot specially improved by Decepticon engineers on the basis of industrial robots to build underground facilities.


    With the experience of working on tens of millions of square meters of underground projects in the transformers universe, the efficiency of the construction robot transformed by Decepticons engineers is indeed higher than that of ordinary industrial robots.


    Sun Cheng nodded, "I''ve brought another batch and will put it in the warehouse later. You can activate them later and install all the other batch of equipment I brought. After a while, I need you to produce a batch of equipment for me, and I''ll purchase and deliver the raw materials as soon as possible."


    "Yes, master!"