In fact, this stone cave does not need to leave a vent, this design Yue Qianling is right, from the perspective of the safety of the ancient tomb or treasure, it is a complete failure, and it is difficult for me to understand the purpose of Zhu Yuanzhang for a while.

I thought about it and carefully poked my head out of the exposed stone window, and the location we were was indeed what the Taoist priest called Changping Jiu'antai, my head was stretched out outside the mountain rock, which was estimated to be more than 200 meters above the ground, and looking up from below, I could only see the head of Changping Jiu'antai and me.

I suddenly realized, why this place is called Xianrentai, it should be when this place was built, someone stuck his head out like me, and this Longhu Mountain monk occasionally saw, mistakenly thought that someone was sitting alone on the Changping Jiu'an platform, and over time the rumors were slowly enriched and perfected, because no one could go anywhere, let alone sit on it, so they all thought that it was an immortal who sat on it.

From here, you can take in everything around the Xianshui Rock, the Luxi River under the Xianshui Rock looks down from this height like a jade belt embedded in the mountains, the sun shines on the water surface sparkling, more like a swimming white dragon, the scenery is picturesque and can't help but sigh, almost forgot the purpose of my coming here.

I withdrew my head from the stone window, perhaps because of the fresh air flowing in, and my mood and thoughts were now calm, and I had searched everywhere else, but there was nothing else but this one.

What is the use of Zhu Yuanzhang leaving this?

I sat back next to the firewood, forgetting that vent and thinking for a long time, if it was unintentional, such a big gap would be a complete failure, Yue Qianling sat next to me and looked intently at the stone window opposite, suddenly seemed to think of something, suddenly stood up, let us extinguish the firewood.

When a layer of stone slabs stretched out from the edge of the grooves, the raging oil fire was quickly isolated under the impermeable stone slabs, and when Xiao Lianshan stepped on the firewood on the ground, the entire stone cave fell into a dark darkness again.

A ray of light penetrated through the vent that was opened, and it was particularly eye-catching and bright in this stone cave where the five fingers could not be seen, and the light fell not far from us, Yue Qianling said ecstatically, Zhu Yuanzhang left this vent not for ventilation, but for light!

Where the light points is a safe path to walk.

Such a mechanism design is often seen in archaeological documents, Yue Qianling's idea ignited our hope, but it takes a long time, the movement of light is with the transfer of sunlight, in fact, in the process of exploring the Ming Fourteen Tombs before, we have also encountered similar mechanism design, now what we have to do is to wait quietly in this dark stone cave and note the path of light movement.

Sure enough, as Yue Qianling imagined, the light from the outside slowly moved under our gaze, slowly extending to the direction of the crystal dragon, I thought about the direction of this fairy water rock in my heart, facing east and west, from the sunlight I saw when I poked my head out just now, it is not difficult to know, this is early morning, we are really lucky, because if Yue Qianling's inference is correct, this stone window will only shine in the early morning when the sun rises, and move with the sunrise, once you miss it, I am afraid that it will have to wait for the next day, For us, the most important thing is time.

The light has extended to places we dare not touch, Xiao Lianshan couldn't wait to stand up, there was an urge to jump, completely forgetting the thrill when the stone cave mechanism was triggered before, Wen Zhuo hadn't spoken for a long time, lowering his head and playing with the wood in his hand, as if he was thinking about something.

After the danger last time, Gu Anqi said that he would not let Xiao Lianshan risk his life again, Xiao Lianshan also knew that the mechanism in this stone cave was not a joke, and everything was based on the inference that Yue Qianling had not yet verified.

I asked Xiao Lianshan to find a big stone and throw it where the light was pointing, but when the first stone hit the ground, the mechanism did not trigger except for a heavy crashing sound.

Judging from the results of our previous exploration, the mechanism in the front passage was placed at random, I asked Xiao Lianshan to try again, Xiao Lianshan has become cautious now, and waited for a while until the light slowly extended forward for a distance, and the second stone in Xiao Lianshan's hand was thrown to the position where the light was shining accurately.

Lofty!

The thick iron spikes in the stone wall pierced out in an instant, and the left and right sides were tightly intertwined, and the second stone triggered the mechanism, and if it stood in the position pointed by the light, it would definitely kill you on the spot.

"Emperor, you were able to find the Ming Fourteenth Mausoleum before, which means that you are thoughtful, hehe, you will actually try this with them." Wen Zhuo's bohemian laughter came from the darkness. "Yue Qianling said that the path pointed by the light is safe, your brain is so easy to use, you should be able to think that there is something wrong with this."

In the dark, others couldn't see the disappointed expression on my face, until Wen Zhuo's voice came, Yue Qianling asked Wen Zhuo what was the problem next to me, I suddenly sighed heavily, it seems that I was too anxious, and I didn't realize such an easy-to-understand thing.

The light moves according to the height of the sun, and the trajectory of the sun rising in the east and setting in the west is eternal, that is to say, the path of the light is the same, the light will not twist and turn, it will only be a straight line, according to Yue Qianling, this light will extend straight from in front of us to the crystal dragon.

If this is a safe passage, then there is no need for the guidance of the light, I think of this as too simple, Wen Zhuo continued in the darkness, there is still one thing that we have not paid attention to, I looked up and knew that he was talking about the crystal top above our heads.

The crystal dragon's massive dragon mouth is a passage to the back, blocked by an unavoidable and impermeable iron spike mechanism, and the text on the ground implies that the crystal dragon needs to be trapped in water, and the vents left behind are not for the purpose of indicating a safe path.

Wen Zhuo said that these existing things in the stone cave will not exist for no reason, each should have its purpose, we only know that the trapped dragon has water, that is, the water through the faucet, if you want to unlock the mechanism here, the first step should be to link all the things in the stone cave.

For the crystal top, I only think of the rumored gem of the Mausoleum of Qin Shi Huang as the sky, but if it appears here, it is also a bit nondescript if it also means the sky.

The crystal dragon, the crystal top and the open vents, as well as the sentence that the hidden dragon should not be used to derive the trapped dragon to get water, these things are like Wen Zhuo's question, what is the connection, how can these things be connected together.

I walked back and forth while thinking about it, perhaps in the darkness people will instinctively choose the place of light, I unconsciously walked to the edge of the stone window with light penetrating, and once again poked my head out, the Luxi River under the fairy water rock sparkled in the sun, like a swimming brocade, like a winding and circling white dragon swimming between the mountains and mountains.

The dragon head of the crystal dragon is in the hundred-meter-high mountain wall, the dragon body and the dragon tail are below the water level of the Luxi River.

The water passed through the dragon's head, and I secretly repeated in my mouth that this incredible thing could not be completed, to let the water of the Luxi River flood the dragon head of the crystal dragon, I looked down from a high place, how could it be done at such a high distance......

My body twitched suddenly, and I suddenly turned my head to look at the crystal top hanging on the top of the stone cave, and then my eyes fell on the crystal dragon opposite, where I was standing, the light illuminated the expression on my face clearly, and I guess everyone else could see it clearly.

"Mirror! I know that you have never left the bronze mirror with you, bring it to me. I stretched out my hand and said loudly to Yue Qianling.

In the dark, Yue Qianling handed the bronze mirror to me, and Wen Zhuo's voice came again.

"Hehe, it's still a little worse, the emperor is the emperor, this time I'm not as fast as you think."

I smiled faintly, but I was still a little nervous, I heard that Wen Zhuo should be the same as I thought, I stretched the mirror out of the vent to adjust the direction, slowly pulling the light refracted on the mirror to move little by little.

When the light finally hit the crystal top, the whole crystal top was like a huge and bright jade plate, and the light refracted by the mirror was actually not strong, but it became extremely dazzling in the gathering and magnification of the crystal top.

Under the transformation of these rays at the top of the crystal, a strong white light directly hit the crystal dragon opposite us, the whole dragon body was suddenly bright and shining, and each piece of dragon scales polished by the crystal was shining, projected on the ground in front of us, due to the different light absorbed, the reflection of the dragon scales was also different, composed of bright and gray two colors, neatly spread all over the ground.

The corners of my mouth also slowly turned up, needless to say, the safe passage is in the reflection of the dragon scales of these two different colors, Xiao Lianshan used the stone to test and quickly proved that the brightly colored dragon scale reflection is the safe passage, and the gray one will touch the mechanism.

I finally understood the connection between all the things that exist in this cave, why choose crystal, because it has excellent refraction and light concentrancy, which is the key to the mechanism of this stone cave, and the trapped dragon gets water, Wen Zhuo is right, it must be water over the dragon's head, but this does not refer to real water, but light, I used a copper mirror to refract the Luxi River below and projected it onto the top of the crystal, and the reflected light shined on the crystal dragon.

The sparkling Luxi River now floods the crystal dragon, and these rays will illuminate the entire dragon body, the dragon scales are polished from crystal, each dragon scale is carefully spliced, the light absorbed is different, and the brightness of the reflection is not the same.

This time, I didn't let Xiao Lianshan take the lead in front of me, and I was very confident that I stepped on the bright reflection of the dragon scales, until I landed on the huge dragon mouth opened by the crystal dragon, and said with a smile.

"The Fourteenth Tomb of the Ming Dynasty is inside!"