After about another meal, Sha Dutian saw the end of the passage, the outside of the passage was pitch black, and no light came in, it seemed that the entrance of the passage was not the exit leading to the outside.

He motioned for Zhao Ruozhi to stop, and then slowly approached the entrance of the passage, and with a flashlight, he found that there was a large space outside, surrounded by rocks, densely packed with the entire space, and there was a faint gravel paved path in the middle of the rubble, leading to somewhere ahead, but the rocks blocked the view, and I couldn't see what was going in front of the gravel road.

Sha Dutian whispered: "Mentally retarded, come here, there is no danger." ”

Zhao Ruozhi walked out of the passage, looked at the space in front of him, and felt like he had come to the belly of the mountain, he stroked the stones around him, it was cold and slippery, it seemed that the humidity here was very heavy, the lights swept by, except for the gravel road, no other places could be set foot in, the top of the space was closed, and there was no ventilated place.

Zhao Ruozhi squatted down, stretched out his hand, and grabbed a stone on the ground hard, the stone did not move at all, he said: "Lao Sha, this road seems to be naturally formed, and I don't know where it leads, I just calculated, our current location is probably in the mountains." ”

Sha Dutian touched the ground with a fire pestle, and with a clang, the echo continued, and he said, "Then we have to go over and take a look." ”

Without waiting for Zhao Ruozhi to say anything, Sha Dutian stepped forward, leaving Zhao Ruozhi to face these strange stones alone. Zhao Ruozhi stood up, looked at the stone forests on both sides, and was stunned, these strange stones were like rows of soldiers, with strange formations, fully armed and waiting for him to walk into the unknown trap.

The gravel road is not long, Sha Dutian turned a corner and saw the end of the road, at the end stood a gate, the diameter of the door was two meters long, the whole body was black, the shape was round, and the door was inlaid with nine strange figures.

Zhao Ruozhi thought that these rocks would hide some mysteries, but when he turned a corner, he saw the end of the road, and he couldn't help but be a little surprised, he slowly walked to the door, and saw Sha Dutian using a fire pestle to pound the pattern on the door. The door is inlaid with nine square figures, each figure is incomplete, the nine figures are distributed according to the nine-square grid, each figure is about ten centimeters apart, he looked at these strange figures, he said puzzled, there are deep gaps in the middle of the figure, there are deep gaps on the left and right, and there is an empty groove under the nine-square grid.

Sha Dutian pushed the door hard, trying to push it open, but the door did not move, unconvinced, he touched the figure on the door with his hand, and pressed down hard, hoping that there was a mechanism that could open the door, Rao was very hard, and the door still did not move.

Zhao Ruozhi guessed that these figures might be a whole picture, and if it could be the original figure, maybe it could open the door. When he came back to his senses and found that Sha Dutian was pressing there indiscriminately, he said funny: "Lao Sha, don't press it, this is likely to be the Nine Palace Grid Lock Array, if you can spell out the original graphics, maybe you can open this door." ”

Sha Dutian looked at the door in front of him, had a headache, and said unhappily: "A small broken door, there are so many ways, mentally retarded, is there a way to open it?" ”

Zhao Ruozhi looked at the graphics on the door, each figure was carved with different patterns, because the whole piece of the figure was divided, he couldn't see the original appearance of the figure at all, he stroked the figure with his hand and said: "I don't know, it's the first time I've seen such a mechanism, I've seen a similar mechanism in a book before, I can only look at luck." ”

Sha Dutian thought that Zhao Ruozhi would open such a door, but he didn't expect Zhao Ruozhi to say this, so he asked again: "If you make a mistake, will there be any mechanism?" ”

Zhao Ruozhi spread his hands and said: "I can't say for sure, there are many designers who will design mechanisms for the sake of safety, and the buzz we hear is likely to be the sound of agency news." ”

Sha Dutian was shocked, he quickly lay on the ground, put his ear to the ground, and there was a constant buzzing sound from the ground, as if there were huge gears spinning hard.

He stood up, pointed to the ground with his right hand, and said in surprise: "There is something wrong underground, it seems that something is turning." ”

Zhao Ruozhi had expected that there was an agency news room here, and he was still very surprised and said: "This underground is likely to be an agency news room, who has such a big deal." ”

In Sha Dutian's intuition told himself that this place was probably the place he was looking for, which was really a coincidence. He asked again, "Mentally retarded, can you open this door?" ”

Zhao Ruozhi was a little puzzled, since he knew that there was an organ here, why wasn't Lao Sha afraid at all, wasn't he afraid that he wouldn't be able to get in or out? He asked worriedly, "Lao Sha, aren't you afraid?" In case the mechanism is very powerful, we can explain it here. ”

Sha Dutian said confidently: "What are you afraid of, if you feel wrong, we will withdraw immediately, how about it, is it because you can't open this door?" He deliberately provoked Zhao Ruozhi.

Zhao Ruozhi didn't answer Sha Dutian, but took out the book on the earthen bed, and began to turn it page by page, turning it for a long time, the book did not record how to open this door, and he couldn't help but fall into distress.

Seeing that Zhao Ruozhi didn't answer himself, Sha Dutian took out a broken book, and he asked puzzledly: "When is this, are you still in the mood to read?" ”

Zhao Ruozhi closed the book and said: "This is not an ordinary book, it records the principles and cracks of a lot of organ news, I originally wanted to see if there is a way to crack the organ on it." ”

Sha Dutian stepped forward and asked eagerly, "Did you find a solution?" ”

Zhao Ruozhi sighed and said, "Most of the records in the book are simple mechanisms, and they can't be used at all. Sha Dutian said sarcastically: "If you have it, I know it's a useless broken book." ”

Zhao Ruozhi didn't get any help from the book, so he simply put the book away, and then he used a flashlight to shine on the protruding square on the door, remembering the patterns on each figure in detail. He tried to push one of the small squares into the groove so that there would be an extra gap in the nine-square grid that would allow the other patterns to move back and forth. The sound of rubbing between the stones was heard, and his back was soaked with cold sweat, for fear that the mechanism in this door would immediately attack.

The small square was smoothly pushed into the groove, nothing happened, and Zhao Ruozhi let out a long breath. He tried to find the outlines of the four corners of the original figure, but the nine squares were covered with similar patterns, and there was no clue at all.

Sha Dutian saw that Zhao Ruozhi showed a blank expression and asked, "Mentally retarded, you can try to take a look from a distance." ”

Zhao Ruozhi patted his head and said, "It makes sense." He took a few steps back, looking for the corners of the pattern again, and he found that the pattern on each figure had a hidden arc, very faint, and it would not be easy for him to notice it if it weren't for Sha Dutian's reminder to stand from a distance.

With clues, it's easy to do, Zhao Ruozhi tried hard to memorize the arcs on each figure, trying to guess the relationship between these arcs in his mind, there are four figures on the arc that is crossed from the middle of the figure, there are four figures on the arc tangent to the edge of the figure, and there is no arc on the figure, he deduced that the original appearance of this figure is likely to be a circle.

According to his conjecture, Zhao Ruozhi first locked the center of the original figure, and then stretched outward, and soon a circular pattern appeared in his mind.

He numbered the figures on the door one by one, and then arranged them one by one in his mind, the four figures in the corners were obvious, and the rest were the four parts of the circle pattern and the tangent of the nine-square grid, and soon the whole picture appeared in his mind, he didn't expect that this mechanism would be so simple and unexpected.

The result in his heart was decided, and he said happily: "Lao Sha, come and help, I know how to crack this mechanism." ”

Sha Du Tianda said excitedly: "Yo, Lao Zhao, yes, how did you do it." ”

Zhao Ruozhi pointed to the small square on the door and analyzed: "You look at the pattern above, because each pattern is far apart, so it is not easy to see the relationship between them, thanks to your reminder, I found the arc hidden in the pattern, according to the arc, I deduce that this pattern is likely to be a circle, and this nine-square grid is just a big square, the circle is cut into the square, follow this line of thought, it is not difficult to crack." ”

Sha Dutian followed Zhao Ruozhi's hand and really saw a faint arc, if you don't look closely, it is not easy to find, he thought there was no play, but he didn't expect Zhao Ruozhi to crack the mechanism on the door so easily, and he was happy in his heart.

With a clear idea, things are easy to do, Zhao Ruozhi and Sha Dutian started the puzzle, because they could only move one pattern at a time, it took them an hour to complete the puzzle, and most of the time was spent on moving the patterns, the sliding between the stones, the friction was very large, and it really took a lot of effort.

After putting together the pattern, Zhao Ruozhi prayed in his heart that his idea was right, don't make any mistakes, at this moment, the door made a clicking sound, and the nine patterns gathered in the middle of the door, forming a tight large square, and the circular pattern was cut into the square, exactly the same as Zhao Ruozhi thought.

Unexpectedly, the door did not open, Zhao Ruozhi felt very strange, it stands to reason that the door should open automatically at this time, but the door was quiet, without a trace of movement.

In the joy, Sha Dutian thought that the door was about to open, but when he waited left and right, the door was still still, and he couldn't help but get angry, and he began to curse: "Grandma's, a broken door, the shelf is really big, and half a day is in vain." He waved the fire pestle in his hand impatiently, smashing the circular pattern of the nine-square grid, so as to discourage, unexpectedly, after receiving the strength of the fire pestle, the circular pattern actually recessed in.

Rumble.

Sha Dutian never dreamed that his unexpected blow hit the mechanism that opened the door, and the door actually opened.