As he continued to drill down, Peng Ming''s mood became more and more anxious and irritable. After all, this speed is too slow. If it continues like this, he will be far from completing the drilling task within the scheduled time. However, he knows that there is no way. He needs to know the drill bits of the drilling equipment they use, It has been made of more advanced materials of human civilization, and its material hardness has reached 230.

    Such hardness is much higher than that of diamonds. After all, the hardness of diamonds is only 100, that is, twice that of diamonds. However, even so, the drilling speed is still so slow. It can be imagined how strong the hardness of their underground ice layer is at this time.

    Moreover, as they drill for a long time, the deeper they drill, the longer the time required for the same depth. It can be imagined that the hardness of the underground ice layer is gradually strengthening.

    Finally, when Peng Ming''s drilling equipment drilled about 700 meters underground, the drill bit was finally scrapped. Even with a new drill bit, the daily speed has accounted for less than 50 meters.

    At this time, it has been three days since they landed on Mars, which makes everyone very angry.

    At the same time, even the spacecraft and the earth command center are very dissatisfied with such a slow progress.

    It belongs to the earth command center. Immediately let the spacecraft airdrop higher strength drill bits to speed up the drilling of ice.

    Of course, Peng Ming and his team are not only exploring the ice layer above the underground lake of Mars, but also drilling less than 2km away from him.

    However, compared with Peng Ming, the drilling progress there is slower. It has only been drilled down until now. It is only less than 400 meters. This progress is not satisfactory.

    However, fortunately, with the replacement of the drilling bit made of new materials, the speed is much faster. After all, the materials used by the new drilling bit are made of the materials with the highest hardness in civilization, and their hardness has reached 285.

    But it just went down again. At a depth of less than 200 meters, its speed slowed down again, which made everyone helpless and angry.

    "Report captain, the drill bit is stuck." that day, when Peng Lin and others reluctantly continued the drilling work, the professional in charge of drilling in their car reported to Peng Minghui.

    "What is stuck? How is this possible?" Peng Ming looked at the professional with a shocked face after hearing the report from the professional staff responsible for drilling nearby.

    "Captain! The drill bit is really stuck, as if it was stuck by something with super hardness," the professional continued.

    At this time, Peng Ming was even more shocked. We should know that the drill bits they use now are made of the hardest materials of human civilization. The cost of such a drill bit is as high as tens of millions of yuan, which is why they have not been willing to use it before. Moreover, in such a state, even there are only two sets on their spacecraft.

    But now the drill bit made of this material is stuck, so he can judge that it is definitely not as simple as he thought under the ice, because the ice formed by ordinary water can not reach such hardness even if the hardness is higher and the temperature is lower.

    According to the current situation, they are likely to drill into superhard material that the earth does not have, otherwise, the drill bit can not be stuck.

    So he immediately ordered to stop the drill and prepare to pull out the drill to see the situation.

    However, at this time, the communication from drilling point 2 sounded in the communication instrument. Like here, the drill bit of drilling machine 2 was also stuck.

    Immediately, Peng Ming reported his information to the spacecraft above them.

    "According to the report, the ground ice drilling encountered obstacles. All the drill bits at drilling point 1 and 2 were stuck. According to our conjecture, we are likely to encounter substances with ultra-high hardness and strength. If this is true, it means that we have found new substances.

    So I have ordered the two drilling rigs to stop drilling first and draw out the drill bit to test the material of the drill bit. "

    "As the captain of the spaceship Dijiang, he has always agreed to the request of the ground for the report of the two drilling rigs on the ground. After all, it doesn''t take a month or two to drill through the ice above the ground at such a speed. If it''s on the earth and the moon, it doesn''t matter. But this is when they explore Mars this time The space is limited, and the materials carried on board are also very limited.

    Of course, if superhard metals or superhard substances of great strategic value to human civilization are found in the ice layer of the underground lake, it doesn''t matter if they are later, "Captain Qiu said.

    In fact, as the captain of the spaceship Dijiang, Captain Qiu is very excited. He knows very well that if he wants to stop these drill bits from continuing to drill downward, the hardness of these materials must be stronger than that of the drill bit, that is, the hardness and strength of the mineral materials contained underground must exceed 285 that the drill bit can achieve.

    Such materials, but also non man-made materials, are the products of natural formation, which is of great value to the whole human civilization.

    Not to mention what these things are and how they are formed, these things are of great scientific value.

    Only these materials can play a great role in the scientific and technological industry of human civilization, which can definitely raise the scientific and technological level and civilization level of human civilization to a new level.

    This can make captain Qiu, the person in charge of the Mars expedition, how excited.

    Of course, it does not rule out that these substances are not natural products, but man-made products.

    If it is really man-made, then its significance is even greater.

    Because if these substances are really man-made products, it will prove that there was definitely a higher civilization on Mars with absolute achievements in material technology.

    At the same time, combined with those civilization relics above Mars, Mars must have been very brilliant in the past, and it is not impossible to even reach the aerospace level.

    If all this proves to be true, how such a Martian civilization that can reach the level of aerospace and civilization disappeared is absolutely enough for human civilization to explore.

    Therefore, whether these materials are naturally formed or man-made, they have extraordinary significance for human civilization.