When it comes to tomb exploration, Ye Jiuqing is definitely one of the best figures, his ability is really not to blow out, the tomb buried in the ground, what direction and what specifications, where the tomb is, the specific location of the main tomb, Ye Jiuqing can only know it by walking around, and there is no deviation.

The hanging coffin and the cliff coffin are not the burial system of the Central Plains, but one of the burial styles of the ancient tribes in the southwest region, which is one of the cliff burials.

Dig several holes in the cliff and nail the wooden stake, put the coffin on it, or put one end of the coffin in the cliff, and the other end is erected on the wooden stake nailed by the cliff, and the coffin can be seen under the cliff, hence the name.

The hanging coffin burial project is difficult and dangerous, costly, mainly prevalent among the nobles of the ancient tribe, this kind of burial system is completely different from the Central Plains to value feng shui, the cultural inheritance of the ancient people here does not have the concept of feng shui at all, they only choose the cliff burial, the dream is tranquility and peace.

These ancient tribes firmly believe that those who are high regard for filial piety, and those who are buried will have good rewards.

Therefore, the ancestors are buried on the cliff above the cliff, so that the ancestors can rest forever in a quiet and beautiful environment surrounded by green mountains and clear water.

But the cliff burial is not only troublesome, the most troublesome thing is that the tomb owner of the hanging coffin has a respected status during his lifetime, although the burial goods are rich, but almost all of them are primitive pottery, bone tools, and bamboo and wood, etc., the cliff burial is almost invisible gold and silver, so no one wants to make up their minds about the hanging coffin, after all, it is so high, the slightest carelessness will be set up, and even if it succeeds, there will be no gain.

Therefore, even if no one in the industry will go to the cliff coffin, this is why Ye Jiuqing can only look up and sigh now, but he is at a loss.

"The method of cliff burial has been lost for a long time, and I have asked many people before and after, but none of them know how to get these coffins." Ye Jiuqing sat on the ground and took a sip of water. "I also consulted Uncle Seven for this, and his old man said that there are only two ways, either from below to the top."

Ye Jiuqing pointed to the sacred mountain opposite and continued, because those who could be buried in the hanging coffin were people with extremely high status and status in the ancient clan, such as priests or leaders, and there were also great ghost masters.

After these people died, the tribesmen would use bamboo or wood to build a cloud platform at the bottom of the mountain, just like building a tall building on a mountain, until the cloud platform reached the most ideal height, just like these caves we see today, at least more than 300 meters above the ground.

The clansmen climbed up to the cloud platform and directly carved out a cave in the mountain, and placed the coffin in it, and finally poured fire oil on the cloud platform, lit it and burned it, so that the hanging coffin was formed.

However, this method consumes unimaginable manpower and material resources, and it takes a long time to build a cloud platform, and some ghost masters inherit the leader, the first thing they do is to build a cloud platform, which is the same as the Central Plains emperor after succeeding to the throne, first set out to build his own imperial tomb.

"Although this method is laborious, it is indeed feasible if you think about it carefully." Gong Jue said.

"It works, but the caves here aren't dug in this way." Ye Jiuqing pointed to the bottom of the sacred mountain, which was a river flowing through the mountain stream, the mountain was high and the valley was deep, and the water was turbulent. "These rivers that flow down from the Daxue Mountains all year round and finally flow into the Nu River, to build a cloud platform to place the hanging coffin, a flat place must be built at the bottom of the mountain as the foundation of the cloud platform, in such a turbulent river, this is impossible to complete."

"I have seen in some foreign literature, there is also a saying, called the building boat placement method, that is, in the river, the boats are connected to each other and fixed in the river, so as to form a platform floating on the river surface, and build a support on this basis." Xue Xinrou thought for a while and said.

Ye Jiuqing shook his head and said, the method of placing the building boat is also not applicable, to adopt such a method, you must first choose the canyon between the two mountains, first build a dam in the canyon, and then let the river rise to a certain height, and then take a boat to dig a hole in the cliff and place the hanging coffin.

However, the feasibility of such a method is very small, and there is no place to build a dam on the sacred mountain we see today, so the method of placing the coffin from the bottom up will not work.

As for hanging from the top of the mountain, Ye Jiuqing had ruled out this possibility, he had surveyed on the top of the mountain, and found no strangulation marks on the rope and no place to fix the support.

"There is one last possibility, Uncle Seven said that it is called the Houshan Tunneling Method, as the name suggests, it is to dig a hole from the other side of the mountain, and dig through the mountain wall directly, I think about it, this is the most likely way, but the burial system of these ancient tribes is completely different from the one I am familiar with, and I don't know the characteristics and laws of their digging at all." Ye Jiuqing scratched her thinning hair. "I just know how to put these hanging coffins, but such a big mountain, full of towering trees, who knows where the entrance to the cave is."

"Yes, these hanging coffins should be hundreds of years old, the traces left by those ancient people digging caves have long been covered by trees and grasses, just a few of us, it is estimated that we will not be able to find the entrance in a lifetime." The field chicken hung his head.

"If these hanging coffins were tunneled from the back mountain, I would have a way to determine the approximate extent of the entrances and exits." Xue Xinrou looked up at Shenshan and said.

"Do you have a solution?" We all looked at her.

Xue Xinrou asked Ye Jiuqing for a pen and paper, while looking at the sacred mountain, while writing and drawing some lines and numbers on the paper, we looked at her blankly, I didn't understand what she was doing, Xue Xinrou was engrossed in the calculation, it is estimated that she found us confused, and patiently explained to us.

If the tunnel method of digging the back mountain is adopted, the angle of the tunnel can not be lower than the cave of the mountain, so that not only the excavation is difficult, but also even if it is extremely difficult to carry the coffin into the walk after digging through, the same parallel cave excavation is not possible, it is bound to start digging a downward inclined tunnel from the oblique angle, of course, the slope of this tunnel can not be too large.

Therefore, it is only necessary to simply observe the elevation angle of Mount Kinabalu, and then use the knowledge of right triangles, including trigonometric functions, to calculate the height of Mount Kinabalu without too much error.

However, to calculate the height of those caves in the mountain, you have to consider the slope, which requires the calculation of the tangent of the elevation angle, so it involves calculus and the analytic formula of the equation for the curve of Mount Kinabalu.

……

We listened to what Xue Xinrou said almost with our mouths open, but I guess the others were the same as me, and no one understood and understood what she meant.

But this did not prevent Xue Xinrou from being serious, and in half an hour, she told us confidently that the approximate height of the entrance and the location of the sacred mountain, I subconsciously looked at Ye Jiuqing, and he actually smiled helplessly.

"It doesn't matter if he's a foreign rat or a dirt mouse, if you can find the entrance, it's a good mouse, let's try it according to Xinrou's method."

Xue Xinrou calculated the approximate range of the entrances and exits, which helped us save too much time, moving forward very slowly in the dense forest, the night in the deep mountains and old forests was the most dangerous, and we didn't dare to risk traveling day and night, and when we arrived at the location calculated by Xue Xinrou, it took us five days.

Xue Xinrou said that this calculation method has an error of plus or minus 50 meters, and we must find the location of the entrance in a general range, and we have been exploring in the dense forest for more than a week, and the dry food brought has almost bottomed out, and the searchable place is less than one-tenth.

Fortunately, we found the stream in the mountain, at least we don't have to worry about drinking water, we searched along the stream, and saw a small pool of water before night, everyone was exhausted, Ye Jiuqing said that today is over, just rest by the pool for a while, and when you finish eating dry food, you have to quickly find a big tree that can sleep, if you don't find it tomorrow, you must return to Bingzhongluo, and come back after resupplying.

Ye Jiuqing squatted by the pool to wash his face, suddenly stood up slowly, wiped a handful of water, looked back and forth, looked around with his expression, and knew that something was wrong, I hurriedly walked over, Ye Jiuqing pointed to both sides of the pool and said: "It's strange, there seems to have been a waterway on both sides, and the streams that flow down from the mountains should flow along the waterways on both sides." ”

I looked down at the place where Ye Jiuqing pointed my finger, and sure enough, as he said, the vegetation on both sides of the waterhole was very short, not like other places full of dense trees, Xue Xinrou took out a magnifying glass, half-knelt on the ground, and after using a shovel to clear off the vegetation, he used a magnifying glass to look at it for a long time.

"These two waterways are not naturally formed, there are traces of man-made excavation, and there have been people here who have been active." Xue Xinrou raised her head and said in affirmation.

"This stream flows from top to bottom and flows into the Nu River, so why build a waterway here?" I frowned, puzzled. "It doesn't make any sense."

"Come here!" The field pheasant shouted loudly in the upper reaches of the waterhole.

As we walked briskly, Tian Ji excitedly pointed to a rock in the current, which was so smooth that two intertwined snakes could be seen swimming through the water ripples.

I fixed my eyes and was surprised to find that this rock was engraved with the totem of Lingshan, because it was not in the stream, if it was not for the field chicken playing in the water, it was not easy to notice, I stretched out my hand to take out the rock and take a closer look, but the palm-sized rock could not be moved, as if embedded in the bottom of the stream.

I still wanted to try, but I was pulled by the palace lord, he pressed his hand on the rock, and suddenly a trace of surprise protruded between his eyebrows, and his hand suddenly pressed down, and the rock magically sank.

With a roar, a thick slab of stone rose from under the stream, blocking the flow of water from flowing down impartially, so that the stream could not pour but could only flow from both sides of the slab, and we looked back to find that the blocked water was being directed towards the channel we had found before.

And the water surface of the pool just now slowly descended, and a flat and smooth stone slab appeared in front of us, Xue Xinrou walked to the stone slab excitedly, and looked up with a smile after tapping a few times.

"It's empty down there, this should be the entrance to the tunnel!"

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