"Xiaoyu, he has landed on Mars!" Du Xingyu''s parents immediately learned the news.

    "Successful landing!" everyone in Xingyao company and Chengfeng space company is celebrating.

    In front of TV and the Internet, there are also a large number of viewers celebrating and cheering for it.

    Two hours later, on Mars, Chris plain, they determined the site of the base.

    It is a lava plain on the back of a crater, which can block the dust storms that often sweep around on Mars; The Martian sand on the surface can be used as building materials. It has a wide field of vision and flat terrain. It is a good choice.

    "The target camp is about an hour away from the Yinghuo," Xu Lianqiu said, looking at the special watch. "We must return before 6 p.m. Martian time, which is the safest and safest."

    "Let''s go!" the Mars spacecraft Yinghuo carried two folded Rovers. The people sat on the rovers, carrying materials, followed by an electric scooter composed of modular robots to the target location.

    Taking advantage of the bus, Du Xingyu cut the picture taken by the camera a little and sent it to his account of "earth observation".

    "Updated again?" the trembling fans of Du Xingyu saw the latest video as soon as they opened the software.

    In the picture, Du Xingyu stepped on the first footprints of human beings on Mars!

    “6666！”

    "We have officially landed on Mars!"

    "(expression: I admit you''re a little good.)"

    "Before the news appeared, I saw it trembling! So excited!"

    "Now that we have landed on Mars, we need to find a suitable place to build a Mars base..." Du Xingyu explained in the video.

    "All right, everybody, we have found the place and are ready to go!"

    The video came straight to the audience.

    "The author is too short!"

    "Just a little, I still want to see!"

    "@ xiaowanzi, watch the new program - Mars for survival!"

    "It''s not much better than a variety show?"

    "Pay attention, pay attention!!! Find the next set!"

    In just a few hours, Du Xingyu''s trembling fans rose to more than 5 million! And as his video enters the hot video list, this speed is still increasing!

    On Mars, Du Xingyu led a team to the target site.

    At the foot is a wide lava plain covered with a layer of sand. Further away is a circular mountain range, which was formed by meteorite impact in ancient times of Mars.

    "Start!" Du Xingyu gave an order and everyone began to work.

    They first set up an inflatable anti radiation tent. Although they have space suits to prevent radiation, they still can''t be exposed to the surface environment for a long time, which will damage their bodies.

    Su Peng and others manipulated the modular robot, began to lay the foundation for the base, collected sand and stones and handed them to the 3D printing robot to lay the foundation.

    Xu Lianqiu and Xu Rui went to lay portable signal stations for communication and environmental monitoring equipment.

    This seemingly calm Mars actually hides countless dangers. The strange and changeable natural environment is their biggest enemy!

    Modular robots are constantly working, and the foundation of the Mars base is being laid rapidly. The process is similar to that in Du Xingyu''s previous video. The printed Martian mud is stacked layer by layer on the ground to form an ant nest shell.

    When the shell is laid, they will build another wall with dry ice and soil to keep warm and prevent radiation.

    The Mars construction site is in full swing. A few kilometers away from the construction site, Xu Lianqiu and Xu Rui are installing a wind speed alarm, which is facilitated by a microprocessor and a high dynamic wind sensor to monitor the flow direction and speed of the surrounding air.

    "Hmm?" Xu Lianqiu said with a sudden surprise, "Xu Rui, do you think the wind speed is abnormal?"

    "Abnormal?" Xu Rui looked at the instrument and said, "there are some fluctuations, but they should be within the normal range. The alarm also shows normal."

    "No!" Xu Lianqiu frowned and said, "do you remember what we learned in simulating the Mars base? The composition and structure of the Martian atmosphere are different from that of the earth, and we can''t judge it by the standards of the earth."

    She looked at the instrument carefully and said, "the air flow has accelerated, the wind direction has changed... There may be a sudden dust storm!"

    Martian dust storms are frequent natural disasters on Mars, hundreds of times almost every year. In some cases, the huge Martian dust storm will even last for several years. The dust with a particle size of 10 microns will be blown up thousands of meters to block out the sky and the sun!

    The Mars synchronous satellite has been monitoring the meteorological conditions above the landing point, but it is difficult for the satellite to give advance notice of local sudden changes.

    "We didn''t find any sign of dust storm before landing... But you''re right. The atmosphere here changes too fast. We''d better inform the captain in advance." Xu Rui shouted to the communicator, "Captain, I''m Xu Rui. We found that the change of air flow nearby is increasing, which may cause dust storm!"

    "Dust storm?" Du Xingyu was controlling the robot to build a wall. When he heard Xu Rui''s words, he looked around.

    It was very calm around, with only a slight wind blowing the sand.

    "Are you sure?" Du Xingyu asked again.

    "It''s 60 percent possible," Xu Lianqiu said in the communication channel. "There are too few data, so it''s difficult to make accurate prediction. I suggest stopping work immediately and preparing to return."

    "OK!" Du Xingyu said directly in the team channel, "all team members, immediately suspend construction and scientific research tasks, gather and finish work, and prepare to return to the spacecraft!"

    Before the base is built, even if it is only 10% possible, they don''t have to gamble. Anyway, there is plenty of time, but there is only one life!

    Xu Lianqiu and Xu Rui ride on the Mars motorcycle and run towards Du Xingyu.

    On the construction site, people also began to immediately pack up tools and materials, put them on the board car composed of modular robots, and prepare to return to the spacecraft.

    At this time, the wind speed alarm has started to alarm, and the wind speed began to surge in a short time. There was a roaring wind in the distance. You can see with the naked eye that yellow sand filled the other end of the lava plain, like thousands of troops running towards Du Xingyu and others.

    "It''s too late to go back!" Xu Lianqiu shouted to Du Xingyu anxiously, "the wind speed is faster than us. It''s an hour''s journey to go back. You''ll be caught up by the dust storm! You''d better take shelter on the spot!"

    Du Xingyu knew that his decision at this time was related to the life of the team members.

    Thinking of the training content at the simulated Mars base, he quickly shouted: "everyone stop the task immediately, lie down behind the mud wall and cover yourself with a shelter! Remember, don''t probe, protect yourself and wait for the dust storm to pass!"

    Du Xingyu is very clear that the landing site they chose is Chris plain. Because of the geographical environment, there will be no large-scale dust storm, which must be a sudden local dust storm.

    The Martian atmosphere is thin, only 1% of the earth''s, and the wind force of local dust storms is limited. It is impossible to blow away the Mars rover and spacecraft as in science fiction movies.

    The mud wall built by the module robot just now is an inclined pile structure, which will block most of the wind and sand.

    As long as appropriate measures are taken, we can deal with the crisis!