I don''t know how long I''ve been walking


    Sean couldn''t see the weather in the dark. It''s probably more than half an hour.


    However, there is enough spacious space in the cave. I can''t see the key points all the time. The surrounding is as empty as a bunker.


    If it weren''t for the plateau, Xiaosen would even doubt whether it was a military fortress before!


    "Why does this place look like a man-made thing?" Lucille also felt the abnormality here. In any way, the cave looked too much like a underground palace.


    "It shouldn''t be!"


    Sean replied.


    If it is man-made, it can only show that people in ancient times were too strong in science and technology.


    It''s thousands of meters deep underground. It''s good for ordinary people to dig down 100 meters. Ordinary underground palaces are only this deep. What tools do you have to use to dig below thousands of meters?!!


    Today, I have seen many historical documents. If there were such a powerful era, it would be impossible to leave nothing behind. Moreover, this is an uninhabited plateau area, which is not suitable for human long-term residence. There is no need to build a fortress here.


    But


    If not, it doesn''t seem so sure.


    The surrounding environment always makes people feel that it is deliberately polished. Even the walls are very smooth. It is impossible for naturally formed things to be like this, even if it is excavated by the giant insect.


    If the burrow giant is digging, the place should be like an earthworm hole. There are crisscross roads everywhere. It is impossible to have only one road like this, and it really looks like a bunker.


    "But it''s really similar here!"


    "It''s very similar, but I can''t think of anyone who will build a bunker here."


    To store national wealth?


    It seems possible.


    Just like those novels and stories, so and so country is too strong, deeply afraid that their descendants will be retaliated or destroyed. When it is strong, it buries the national secret treasure somewhere, waiting for future generations to open it when they encounter difficulties.


    This is not only in the novel story, but also in reality. It seems that Jiagong did so.


    But the area here is not general after all


    There have never been any powerful ethnic groups in the history of the plateau area. Even many historians believe that the original residents of Xiata country migrated. In order to avoid the war in the plain, they had to go to the plateau and slowly formed the local race.


    Whether this research is true or not, it is certain that there is no powerful country in the history of the plateau. It is too difficult for them to dig underground fortifications thousands of meters underground!


    Sean pulled Lucille on.


    It''s strange not only that it''s as confusing as underground works, but also that there''s plenty of oxygen here.


    Such a deep underground can maintain the same environment as the surface air, which means that there must be a channel facing the outside, but even if there are other channels, the air can not be completely the same as the surface.


    It must be some other device.


    Sean subconsciously thought it was some kind of magic


    Now they are walking in the depths of the plateau.


    Because it is not easy to walk on the surface, it takes time to walk through the mountains, but once they come to the flat road under the ground, they must walk faster.


    It''s estimated that it''s a lot closer


    According to the distance on the surface, Sean felt that he might have reached the bottom of the earth below the highest mountain.


    That means you''re close to what you''re looking for this time.


    The place where the ancient crystal guides itself should be here.


    "Are we going to where we''re going? Mentor." Lucille also felt something different, but didn''t think about that.


    I just think this place should be close to the roof of the world they planned to go to before.


    Although it''s underground, it must be above!


    "It should be here... Do you feel that the air here is the same as the surface temperature." after all, it is thousands of meters deep underground. I felt stuffy before, but I felt much better after walking.


    "Yes, curious!"


    Said Lucille, looking around.


    It''s strange


    "I''m afraid it''s some kind of magic, or something with energy," Sean said.


    "Is the stone still there?"


    Lucille quickly opened her purse


    "Still there."


    In the previous violent blasting, the shock wave almost destroyed most of the things carried by the two people, and there was not much left. When she was on the ground, Lucille sorted out the rest, of which the purple crystal stone was the only thing without any damage.


    It looks intact and feels like it has not been affected.


    "Here..."


    Lucille took him out and gave him to Sean.


    Holding it in the palm of your hand really feels cold.


    This thing stores some power that even humans can''t explain, but this power can''t be opened by existing technology or magic. Therefore, in the eyes of outsiders, it is a strange stone with cold characteristics.


    Even if you have a strong ability, if you can''t use it, it can only be a stone.


    Sean didn''t know who had the ability to activate the ancient crystal and make the Hughes leap out when he was in the kingdom of basharan more than ten years later.


    Sean still doesn''t know that.


    But this time it should be much better. Even if xiugus appears again, he is not afraid of any creatures with his current strength, even ancient creations.


    The two continued to move forward. The more they moved forward, the feeling of the bunker and the comfort of the environment became more and more obvious


    It seems that this place has deliberately created a place for people to live. Neither the air nor the environment is the feeling of deep underground. Even leaving aside the surrounding walls, it is not too much to say that it is on the ground and on a comfortable plain at this time.


    Lucille and Sean went to the plateau in thick coats, but now they feel hot.


    The surrounding environment began to become more comfortable!


    There was light in the dark distance.


    "There''s light over there."


    "Well, go and have a look!"


    Sean also found light in the distance.


    Like the colorful beams of ice under the sun, the dark underground cave is illuminated like day.


    When Sean and Lucille approached, they found that the reflective parts were all huge crystal blocks, extending from hundreds of them underground to the top, even so high that they couldn''t see the top.


    This thing should be the part that leads directly to the surface


    Light is refracted in from the outside.


    "There are statues in it!"