Suddenly, I heard a loud bang not far away, like a landslide and the ground cracked.

The four siblings were so frightened that they didn't know what was going on, and after glancing at each other, they looked at the sound in horror.

Helplessly, the light of the Dragon Ball is not too far away, and I can't see anything. But the echoes in the cave continued, and it took a long time for them to calm down.

Ou Zhou was shocked and said, "Senior brother, this sound seems to be the collapse of the roof of the cave, it's really scary. ”

"It's broken, it can't be that the way back is blocked, right?" Jiang Yang was shocked.

Ou Zhou said: "This is not very likely, our cave exploration micro-heart method does not suggest a big risk!" ”

Jiang Yang calmed down and nodded: "Yes, it should be the voice from the front." ”

"Let's keep going."

Ou Zhou and Jiang Yang walked in front, and Shui Jingxin and Ke Fei'er followed closely with both hands.

Shui Jingxin took a breath, rubbed his chest, and reproached: "Little Brother Ou, what is the good smirk, I almost didn't scare my soul." ”

The loud noise made Kefeier's heart beat wildly for a while, and he said at this moment: "The laughter seems to have shook somewhere? ”

"Thankfully, it wasn't the top of our heads that collapsed." Shui Jingxin said with palpitations.

Less than 100 meters away, a boulder blocked the way.

Ou Zhou looked at the roadblock suspiciously with the help of the light of the Dragon Ball, and said, "I didn't feel this boulder when I used the Cave Exploration Micro Heart Method before, didn't it fall just now?" ”

Jiang Yang took a few steps closer and carefully inspected the surroundings of the boulder, he picked up a fist-sized stone and carefully observed the section: "Senior brother, look, the stubble of this stone is very new, and it is obviously just cracked. ”

After Ou Zhou looked at it, he inspected several stones of different sizes and found that there were newly cracked sections of different degrees on them: "Maybe it was the sound of this giant falling just now." ”

Jiang Yang held the dragon ball and looked up, and there was indeed a huge depression on the top of the cave, the stubble looked a little newer than the others, and the shape was extremely similar to this boulder.

"Senior brother, people say that sonic boom roof tiles, you are sonic boom stones. But at a distance of almost 100 meters, how could laughter have such a great power and shake such a big stone down? ”

"That means the stone was about to fall, and it happened to be shaken by my laughter." As Ou Zhou spoke, a layer of cold sweat soaked out of his back, "Senior brother, two sisters, if it weren't for my laughter to shake this boulder, if we walked here and the stone suddenly fell down, what would it be?" ”

The three of them glanced at each other, and their faces changed suddenly. Shui Jingxin covered her mouth and said in shock: "We will be smashed into pulp." ”

Ke Feier came back to her senses, rubbed her chest, and said, "It's so dangerous, it's so dangerous, it turns out that my brother's sudden laughter turned out to be life-saving." ”

Jiang Yang's complexion changed a few times before he said: "Every unexpected move of the junior brother is all in line with the will of heaven. If it weren't for that abrupt laugh, the consequences would have been unimaginable. ”

Several people were surprised for a while, and Ou Zhou held the dragon ball and looked up intently.

"Boulders block the way forward, and we either turn back or find another way." As he spoke, he suddenly took a leap and popped up.

The depression where the boulder had fallen was just enough for a man to stand, and at this moment he was standing on the boulder, turning his head to look around.

It turns out that there is something else going on. A one-meter-square hole stands out.

Ou Zhou leaned in and put the dragon ball inside, only to find that the space inside was much larger than the entrance of the cave.

He lowered his head and smiled: "No wonder this boulder fell for no reason, there is a hole in it, and the space is not much smaller than this!" ”

"Hey, it's still a hole in a hole," Jiang Yangqi said, "But this is too unbelievable, isn't it?" ”

"Senior brother, I'll use the Cave Exploration Micro Mind Method to go in and see if there is any danger inside?" As he spoke, he stood on the boulder, concentrating on the exercise of injecting a ray of inspiration into the cave.

The entrance to the cave was in the direction they had come, but as soon as they entered, it turned to the right.

The wisp of inspiration went along the hole in the cave, turning three times and two times, and suddenly a large space appeared in front of it, and it was dark inside, and nothing could be seen.

However, no risk factors were perceived. Ou Zhou then took back that wisp of inspiration.

Fu lowered his head again and said, "Senior brother, this cave above leads to a larger space, and there is nothing to see inside. ”

Jiang Yangqi said: "Let's go in and see, what kind of place is it?" ”

Ou Zhou said: "Senior brother, you put the dragon ball in your hand on that stone, lest we enter the cave, the two sisters are dark here." ”

Jiang Yang did just that.

Ou Zhou took a vertical leap and got into the cave above, Jiang Yang jumped on the boulder, and then also entered the cave.

The two brothers took a dragon ball and touched it inside.

The dragon ball underneath shone brightly on the stone, but the sisters did not dare to pick it up.

The reason is very simple, the magic of Dragon Ball is so great that even Kefeier was once subject to it. The water meditation skill is still shallow, so I dare not touch it.

Ou Zhou and Jiang Yang held the dragon ball and touched it along the cave.

Soon after, I entered a space where the light of the Dragon Balls could not see the stone walls.

When looking around with the help of light, more than ten stone tables and stone benches can be seen in places that can be reached.

Further inside, you can see tripods, pots, and pots covered with green rust. On the stone table next to the wall, there are more than a dozen rusty bowls and more than a dozen pairs of chopsticks that cannot be seen in their original appearance. A little touch, and it's rotten.

Walking along the walls, you can see that the stone mortar contains rotten grain, and there seems to be a bedding used as a bedding on the stone bed, but it has long since rotted and the color and texture are not visible.

When you look at it again, the stone chamber is a dome, about 100 square meters in size, and the living facilities are complete, and it seems that no less than ten people have lived in it.

After looking around, the two brothers were worried that Shui Jingxin and Ke Fei'er were in a hurry, so they retreated, returned to the entrance of the cave and said, "Two sisters, there is a very large stone room in the cave, and there used to be people living in it, come up!" ”

Shui Jingxin pointed to the dragon ball and asked, "Which bead should I do?" ”

Jiang Yang drilled out of the hole, jumped onto the boulder, and then went down to the ground to pick up the dragon ball.

The three sisters and brothers stood on the boulder in turn, and Ou Zhou stretched out his hand and pulled them into the cave one by one.

Then Ou Zhou was in front, Shui Jingxin was second, Ke Fei'er was third, and Jiang Yang was behind, and they went to the stone room together.

This time, two dragon balls the size of a toddler's fist illuminated the 100-square-meter stone room as if it were daylight.

Shui Jingxin and Ke Fei'er looked at each other in surprise, and Shui Jingxin said: "What age are these utensils, rusted like this?" She picked up a rusty copper kettle.

"They are all bronzes, looking at the shape and rust, they are clearly products of the Spring and Autumn Period and the Warring States Period." Ou Zhou said.

"But who went to this inaccessible place and dug out such a large stone chamber?" Cofier said.

"Digging a stone house to live in a place where this kind of bird doesn't poop seems to be to avoid something, and looking at this situation, it is clear that it is to avoid disaster." Jiang Yang wondered.

"Who are they, and what are they hiding from?" Shui Jingxin asked.

"Being able to force people to dig holes away from people shows that there is no place for these people in any era." Ou Zhou said.

"If it is analyzed in this way, in which special era does it have this ability, it must be Emperor Qin?" Jiang Yang said.

He picked up a copper bowl and dug out half a bowl of rotting grain from the mortar, "Look, the grain is not finished, and the man is gone." ”

Ou Zhou nodded and said, "If this group of people was either discovered by the enemy and forced to flee, they took the initiative to evacuate. ”

"Obviously, the purpose of the excavation of this stone chamber was to live in it for a long time. With such a secret location, it should be unlikely that someone will be discovered, and most of them will be evacuated on their own initiative. Jiang Yang analyzed.

"But where do they get in and out of this stone chamber, there must be a door, right? Moreover, this cave is not easy to climb, and the people who can enter this stone chamber are definitely people with unique skills? Shui Jingxin said.

Ou Zhou nodded and guessed: "Maybe the purpose of the boulder that fell is to block the entrance to this stone chamber." It was probably old and in disrepair before I was shaken off by my laughter. ”

Shui Jingxin said: "This is not scientific, such a large boulder, there is no chain on it, and the space at the entrance of the cave is limited, how can it be hoisted." Even modern machinery has to be a crane of more than five tons to be able to move? ”

Jiang Yang continued: "Unless, there is another entrance and exit in the stone room, or the boulder is originally on the ground." As for the stones with new stubble in the ground, they may have been shaken down by the laughter of the junior disciples, fell from the entrance and exit to the boulder, and then rolled to the ground. ”

Ke Fei'er nodded and said, "This explanation seems to make sense." ”

Ou Zhou smiled: "Yes, Senior Brother's analysis is more convincing." But we still can't figure out who this group is, and what is going on with which bang? ”

Jiang Yang added: "Also, where does the living life, food, and water of this group come from? ”

"If it were me, I would lead the spring from the valley to the bottom of the cliff, and then stand at the mouth of the cave and hang a bucket with a long rope to draw water for food." Ou Zhou rowed the road.

Jiang Yang smiled: "That's a good idea. In short, since this group of people lived in a stone chamber carved above the cave, they were afraid that they also took a fancy to the mountain spring. ”

"Brother Jiang, you have a melon seed, but you are getting more and more bright, you can figure out such a difficult problem." Shui Jingxin quipped.

Ke Fei'er smiled: "Don't you smell that three stinkers have beaten one Zhuge Liang!" ”

Ou Zhou held the dragon ball and continued to observe along the stone wall, and suddenly stood in one place to examine it carefully.

Seeing this, Jiang Yang walked over and took a closer look: "Hey, which is it a picture, or a stone pattern?" ”

Ou Zhou approached and reached out to stroke for a moment, and said, "It doesn't seem like a simple stone pattern?" ”

Jiang Yang said: "The stone chamber is excavated, and it is inevitable that there are chisel marks on the stone wall. ”

Ou Zhou said: "The chisel marks are usually either vertical or oblique, you look at this piece, there are intermittent horizontal lines and upward inclined lines, and there is a slight difference with the chisel marks? ”

Jiang Yang carefully compared for a long time, and said: "Senior brother is right, this piece is indeed different from other positions, there are horizontal lines and upward oblique lines. ”

Ou Zhou took out a notebook from his backpack and used a pen to draw the intermittent horizontal lines and upward diagonal lines on the stone wall on the notebook. Take a look and draw a picture.

Shui Jingxin and Ke Fei'er also came to the front, looking at the stone wall while consulting opinions.

An hour later, an incomplete pattern appeared on the notebook.

Ou Zhou nodded slightly and said, "What do you think about this?" ”

"Like a map?" Shui Jingxin was the first to express his opinion.

Ke Feier nodded and said, "It's kind of like a map." ”

"In my opinion, it's a map!" Jiang Yang said bluntly.

Ou Zhou said: "Even if it is a map, it is a simple map, and you can't see anything. ”

"Why don't we look on the stone wall and see if there are any similar patterns?" Jiang Yang suggested.