In the middle of the earth kang is a small dark passage, there is no light in it, Yang Yiyun's spiritual sense can only be released for nine meters, and there is nothing suspicious within nine meters.

The two walked in, it was cramped and dim inside, but for Yang Yiyun, there was no influence on the spiritual sense.

The tunnel here is different from what I found when I came in before, it seems to be an independent tunnel, there is no fork in the road after walking for dozens of meters, and the terrain has been extending downward at a 30-degree inclination.

Yang Yiyun and Qiu Yun used their spiritual sense to exist in the dark tunnel, and they did not affect it, and they moved forward directly......

After walking for about a thousand meters, Yang Yiyun's spiritual sense suddenly found that the space suddenly became larger, and there were no traces of artificially excavated tunnels here, and it completely became a natural karst cave.

A 30-degree inclination descending nearly a kilometer, if converted, is equivalent to a vertical descent of about 300 meters, which means that they descended to nearly 300 meters underground.

According to the geographical environment, the primary loess of the Loess Plateau is the dust accumulation under the dry and cold climate conditions of the Quaternary glacial period, and the secondary loess is the primary loess transformed by flood and alluvium.

It is one of the most serious soil erosion and the most fragile ecological environment in the world, the terrain is inclined from northwest to southeast, except for many stony mountains, most of them are covered by thick layers of loess, and after long-term strong erosion by flowing water, it gradually forms a special natural landscape with thousands of ravines and broken terrain.

The landform is undulating, mountains, hills, plains and wide valleys coexist, surrounded by mountains, the Loess Plateau region contains rich resources such as coal, oil and bauxite, and is also an important energy and chemical base in China. The loess has fine particles, soft soil, rich in mineral nutrients, conducive to farming, and has a long history of basin and river valley farming.

Except for a few stony mountains, the plateau is covered with a deep loess layer, and the thickness of the loess is generally between 50 and 80 meters, and the thickest is 150 meters to more than 200 meters.

That is to say, at this time, they have detached from the covering thickness layer of loess, and the karst caves that appear now are all composed of gray-blue rocks.

Yang Yiyun casually tested the hardness of the rock on the cave, it should be some kind of rare mineral, he didn't expect that there was a tunnel deep into the ground here, directly penetrating the loess layer, and reaching the underground rock cave.

Except for the narrow passage that came down at the beginning, it is completely natural, and it is supposed to be a karst cave that was formed naturally countless years ago.

I guess that the great northwest may have been a big ocean during the ice age, but after countless years of crustal movement, the sea dried up, and the glaciers melted and turned it into the Loess Plateau.

The karst caves here may be the real landform of a certain stage in the northwest in ancient times.

Yang Yiyun wanted to come here from the secret passage may have been here many years ago, since Qiu Yunzu was found when he was a bandit, and now he has been discovered by Chen Million, and he doesn't know if this is a storage place or another escape route.

If it was an escape route, would Chen Million have already escaped?

In the cave, the terrain has been gentle, and the whole cave is a little damp, with a height and width of about four or five meters.

After continuing to walk for about a few minutes, Yang Yiyun suddenly heard the sound of water flowing in his ears.

The first reaction is the underground river.

Standing in place and listening to it, it was the sound of the water, and it was not small, it should be a big underground river.

Somewhere he seemed to hear footsteps and talking, dozens of meters away.

With a movement in his heart, he and Qiu Yun quickened their pace and rushed over.

I didn't take a few steps to realize that there was a light, and sure enough, it was a person.

From afar, I saw three figures, holding flashlights in their hands, and not far from the three of them was a dark river about 20 meters wide, and there was a modern inflatable boat on the bank, which seemed to be moving things to the boat.

These three people, Yang Yiyun, are all acquaintances at first glance.

One man and two women, the man is Chen Million, one of the two women is a woman who has had a secret affair with an old blind man, and the other is Wang Yilin, a female killer who killed him with Chen Baiqian for the first time.

"Just hurry up and get the gold and gems, don't bring the rest~" Chen Wanwan's voice revealed anxiety, and he looked like he was running away from a catastrophe.

It is true that he was frightened by Yang Yiyun today, from the moment Yang Yiyun cut off Ma Xingtian's head with a sword, he knew that he was invincible, although there was still an old blind man who was a master of poison at that time, but Chen Million and the old blind man were not in harmony, and they did not dare to put their hopes on the old blind man, so they escaped from the inner room and the earthen kang tunnel.

After entering the dark passage, he hurriedly found his two women through the dark passage, ready to take them to sweep away the wealth accumulated over the years, and prepare to escape from the dark river.

Since he accidentally learned that there was a treasure left by bandits here decades ago, Chen Million has been looking for it, and Shao Qiu Yun's parents only got the news that the treasure was in the underground cave, and they didn't know the specific storage.

After searching for more than ten years, I almost dug the dark passage of the karst cave three feet into the ground and did not find the treasure, but I found a road here that leads directly to the outside world, and I can go directly to the vicinity of Qingshi by going out along the dark river, a very hidden escape channel.

After development and construction, a small boat can swim, and today Yang Yiyun killed him, he could only escape from here, and took away the wealth stored here.

Yang Yiyun gave Chen Million the feeling that he was a bad star, too evil, he didn't dare to guarantee whether the old blind man could take Yang Yiyun, nor did he dare to guarantee whether Yang Yiyun would escape from the old blind man, and then found that the secret path caught up, so he was very anxious.

I always feel like I'm in a trance.

Yang Yiyun, who was in the distance, saw that Chen Million and the three were moving things and preparing to escape, sneered, and immediately jumped up and stabbed him with a sword.

Just like Chen Million, who was lucky enough to escape from the claws of an eagle, he was very vigilant in his heart, and when Yang Yiyun shot with a sword, he felt that the wind in the air was wrong, and suddenly turned around and saw that it was Yang Yiyun who stabbed with a sword, and he trembled with fright.

Seeing that Yang Yiyun's sword was approaching, he didn't have time to dodge, and he was not sure to take Yang Yiyun's sword, so he slapped the woman next to him out with a palm in his heart, met Yang Yiyun's sword, and then jumped into the dark river without looking back.

"Poof~ah~"

After Yang Yiyun stabbed out with a sword, he didn't expect Chen Million to be so shameless and decisive, and he actually slapped the woman who had cheated with the old blind man out as a shield, and suddenly the woman was killed by him with a sword.

And the decisive Chen Million also jumped into the dark river to escape, at this time Qiu Yun said loudly: "Mr. be careful~"

Without Qiu Yun's reminder, he felt the sneak attack from behind, and slashed out with a sword.

"Ding~"

"Ah~"

But it was Wang Yilin who stabbed him from behind with a sword, and Yang Yiyun directly cut off the sword in her hand with a sword, and the remaining momentum continued to kill her with a sword.

So far, Chen Million's two women have all died under Yang Yiyun's sword, but Chen Million has jumped into the darkness of the pitch black.

Seeing that the deep dark river rippled without any water waves, Yang Yiyun did not jump into the water to find Chen Million, this is the dark river, there are no creatures in the future, and there is no risk for unknown places.

Besides, it is still unknown whether Chen Million can survive by jumping into the dark river, so he will stay on the shore and take a look, if he comes out of the water, he will kill him, if not, the chance of him surviving in the dark river is also very small in Yang Yiyun's opinion.

Looking at the two women who died under his own sword, Yang Yiyun sighed and fired the True Yuan Away Fire to incinerate their corpses.

In fact, he didn't want to kill women in his heart, but the first woman was Chen Million who hit his sword.

The second woman, Wang Yilin, was that she wanted to assassinate him, and she was completely in the original position and swung a sword and killed him.

Hearing Qiu Yun's footsteps in the distance, Yang Yiyun waved his hand to tighten the Qiankun space with a few four boxes of the inflatable boat, he didn't want Qiu Yun to see the secret of his use of the Qiankun space.

I heard Chen Million talk about gold before, and I thought that the wealth accumulated by Chen Million should be in the four boxes, and this kind of windfall should not be in vain.

After Qiu Yun came over, the two picked up the flashlight on the ground to check the surface of the dark river to see if Chen Million would come out!

It's just that after waiting for more than half an hour, not a single waterside in the dark river has risen.

Yang Yiyun walked around the edge of the dark river in order to find Chen Million's traces, and at a certain moment he was standing at a relatively high place, and suddenly there was a faint fluctuation of spiritual energy in his spiritual sense.

A flashlight shone through in his heart, but he found that there was a fluctuation of aura in the direction of a mountain wall on the opposite side of the dark river.

The other side of the dark river seems to be a lot of space, and the cave rocks are completely black as ink, and from a distance, it looks like an endless dark space.

At this time, a flash of lightning suddenly crossed Yang Yiyun's mind, and he remembered the two love poems that Qiu Yun's sister read before she died.

Love is in the nine secluded flowing water, love is the flower at the end of the other side!

Could it be related to treasure?