The flow of water in the upper reaches of this underground river became gentler. In a naturally formed depression, Fang Feiyang found a dozen scattered green beads. Driven by the water flow, they fell regularly on the bottom of the water.

Turning around.

The area of ​​this pit is not very large, and the surrounding shape is like a rectangular household bathtub.

Through the strong light of the flashlight, Fang Feiyang looked at these stone beads and thought: Could it be that after thousands of years of erosion and erosion by water flow, the original pumpkin-sized Leiyin Stone was broken down into the round beads it is today?

Fang Feiyang took off his shoes and socks and stepped into the water. The river water gathered in this small pit had a warm temperature. It was as comfortable as a foot bath, not as cool as the water downstream.

Fang Feiyang was increasingly able to conclude that these dozen green beads were the remnants of the Thunder Stone. Because only the Thunder Stone had the magical function of releasing heat when exposed to water.

Sure enough, when he picked up a few green beads from the water, the breathtaking image of bolide was once again imprinted in Fang Feiyang's mind. This time, it was an immersive and super strong feeling, and the whole person seemed to travel through time and space.

Standing where the huge meteor fell. This intense feeling that stimulated the blood in his body had only occurred twice. Once in Fengcheng Old Street, he accidentally stepped on the oval thunder stone, and

Just this time.

It's a coincidence that Su Yazhi was present at both occasions and was able to get involved with this girl.

Now Fang Feiyang knows that Leiyin Stone is closely related to Yinmen. Shen Kuo, the ancestor and founder of Yinmen, studied this magical stone more than a thousand years ago. He also reported the strange phenomena obtained from the research.

It was written into "Mengxi Bi Tan".

Master Song Longshan also warned himself many times to keep secrets and not let outsiders know the inheritance secrets of the Leiyin Stone and the Hidden Gate. The old man also hid the rugby-shaped Leiyin Stone in the secret room of the study and would not take it out easily.

Thunderstone is originally an extraterrestrial meteorite. It takes tens of millions of years to break through the starry sky. It is a very rare existence on the earth.

Unexpectedly, he and Su Yazhi's spur-of-the-moment adventure trip would yield such unexpected results. It was truly a worthwhile trip.

Fang Feiyang rolled up his sleeves, picked up the green beads in the water one by one, and put them into his pocket. He searched carefully along the underground river to make sure nothing was missing, and then he went ashore.

"Brother Feiyang, come on, smile!"

At this time, Su Yazhi had just taken a lot of photos in this Feng Shui cave. When she saw Fang Feiyang climbing up from the middle of the underground river with his trouser legs rolled up and barefoot, he pointed his phone at him, turned on the flash, and took a photo.

"Is the light enough? If not, take another photo..."

Fang Feiyang posed a few more times to coordinate with this beautiful photographer.

"Brother Feiyang, what did you gain by running up there? Have you discovered the source of the underground river?" Su Yazhi's excitement remained unabated, and her eyes were still full of novelty and strange brilliance.

Due to the air circulation and high humidity in the Feng Shui cave here, she was too lazy to wear a mask. Su Yazhi walked around the cave in high spirits, with tiny beads of sweat leaking from her straight nose, and her pretty face was white and pink.

It also inspires a rush of red heat, giving people an indescribable sense of athletic beauty.

Fang Feiyang looked at Su Yazhi with a smile, reached out and took out a pack of tissues from the grid of his backpack, pulled out one and handed it to her:

"Wipe your sweat first. It's very cold here. Don't sweat all over. You'll catch a cold easily... This underground river gets wider as it goes up, and it has many branches. The source of the river should be the abundant rainwater on the top of the mountain.

It gradually seeps down and is formed by the convergence of branches everywhere."

Fang Feiyang briefly stated his own judgment. When he was in high school, his geography scores were pretty good. In the "3+2" college entrance examination that year, among the two minor subjects, he chose geography.

So now, after roughly observing this Feng Shui tunnel, we can judge the reason.

Fang Feiyang did not tell Su Yazhi about picking up the Leiyin Stone Bead.

The reason is simple. Since he promised his master to keep secret about the hidden sect, the relevant matters cannot be revealed to this beauty. Moreover, as Su Yazhi's grandfather, the old man has never talked about the ancient sect to his granddaughter.

, Fang Feiyang has no right to say it.

He knows that the older generation attaches great importance to inheritance, as the saying goes, "it is passed down from the male to the daughter, and from the disciple to the son-in-law."

The two people originally wanted to continue along the underground river to explore the lower reaches, but as they walked along the current, the height of the cave was only about 100 meters narrow.

In the end, the two of them only saw the underground river flowing through a stone cave the size of a washbasin, flowing as usual. However, due to terrain constraints, they could not follow the flow.

Fang Feiyang and Su Yazhi returned the same way, climbed over the slippery steps, and returned to the stone door again.

"How are you, beauty? There is only one upward passage left at the three-way intersection. It is up to you whether to rest where you are or to continue moving forward!"

After unexpectedly harvesting twelve Thunder Stone Beads, Fang Feiyang was in a good mood and couldn't help but joke about Su Yazhi.

These twelve thunder stone beads may be worthless to others, but they are of great significance to Yinmen. And when he touches the thunder stone, he finds that his perception is always particularly sharp and his perception is obvious.

Improved, the image seems to have changed from an ordinary 2D movie to an immersive 5D movie.

Moreover, every time he saw the Thunder Stone, Fang Feiyang could sense that there seemed to be something deep in his heart, echoing it and feeling sympathy for each other.

Seeing Fang Feiyang making fun of herself, Su Yazhi deliberately curled her lips, gave him a roll of the eyes, and said: "The troops will rest on the spot for ten minutes and then continue to move forward. They must capture the high ground at noon...otherwise some people will try again."

Shouting hungry!"

After Su Yazhi spoke, she secretly covered her mouth and smiled.

The two of them took a short rest and then climbed up the steps outside the stone door. Deep in their hearts, they both wanted to know, where did this seemingly artificial stone step path lead?

Fang Feiyang led Su Yazhi one behind the other, climbing the bluestone steps with a racing heart. The height of this slope was not very long, only about two stories high.

After a while, there was a ray of light and a breeze in front of them, and they knew they were almost at the exit.

Drilling out from the bottom up through the cave as big as the mouth of a well, they found that it was bright outside and a cool breeze was blowing in their faces.

"Haha, we are actually standing inside the cliff of Huangpao Mountain."

Fang Feiyang curiously walked around this place several times. It was a horizontal cave perpendicular to the cliff. The entrance was half-blocked by some messy ancient vines, and there was a jasmine pine stubbornly growing on the steep wall near the entrance.

Stretching your neck and looking down, you can see the lush green pines and cypresses in the valley and the residential buildings below the mountain.

"Haha, it's really awesome. If there is a waterfall flowing down from the top of the mountain, this place will become a water curtain cave!...Brother Feiyang, come on, take some photos for me. Be sure to take pictures of the entrance of the cave..."

."

Fang Feiyang originally wanted to take a closer look at this cave suspended in mid-air, but the call of the beautiful woman forced him to complete the task of temporary photographer first.

Fang Feiyang absent-mindedly took a few photos of Su Yazhi, and several times he only took photos of half of her body. Fortunately, the beauty didn't know, so he deleted them and continued to take photos again.

After taking the photo, Fang Feiyang looked up and down at the regular-shaped cave with smooth walls. He still couldn't figure out how the cave in the center of the steep wall was formed.

Suddenly, my mind moved, and a sudden thought flashed into my mind.

Could this round hole be formed by the impact and combustion of a meteorite?

Thinking of this, Fang Feiyang couldn't help but touch the thunder stone beads in his pocket.

This touch doesn't matter, the image of a huge fireball falling into the sky once again emerged in my mind. Compared with the scene perceived in the cave, something continued in the image at this moment: skyfire meteors with high temperature and high heat, earthquakes

The mountain shook and crashed into the center of the cliff of Huangpao Mountain, forcibly digging out a round hole in the mountain. The fire in the hole shot into the sky, and the burning meteorite stopped quietly in the deepest part of the hole in the flames.

.

I'm sorry, the cave at your feet was indeed formed by a meteorite impact!

Confirming his conjecture, Fang Feiyang also discovered an exciting thing, that is, as long as he holds the thunder stone bead in his pocket, his perception ability will double, and he can sense without touching anything.
Chapter completed!