There was a roar behind him, the explosion of sword qi penetrating the air, the sound of mountains and rocks rolling down and collapsing, the sound was in the ears, each sound added a smile to Wen Chuanting's face, and in the end, the whole face was full of smiles.

The roar gradually became muffled, until it finally disappeared and became inaudible, Wen Chuanting walked all the way, all the way on guard, carefully guarding against the attack of the fish that caught the net, traveling an unknown distance, feeling that a long time had passed, and no enemy appeared, and Wen Chuanting was a little relieved.

The passage was long and dark, the passage behind him was sealed, and there was no trace of chest tightness and suffocation, and it was clear to ask the pass, not because of his profound skills and his ability to turn into internal breath, and he could feel fresh and fresh when he breathed into the air in his abdomen.

"Pangolins are unique in that they can carve out passages deep into the rocks underground, while taking into account the ventilation system, so that people don't breathe well and die of suffocation. ”

With a sigh of admiration in his heart, he kept walking, and drank a sip of monkey wine from time to time, healing his wounds while breaking the silence in the passage.

Walking alone in the dark and long passage, I don't know the time, I can only hear the sound of my own breathing and the echo of my footsteps on the ground, every breath, every footstep, hitting the heart.

There was no end in sight to the eternal darkness, the endless silence was broken by the sound of footsteps and breathing, and at the end, Wen Chuanting could feel the sound of his heartbeat joining.

The three voices are intertwined, leading to endless thoughts stirring in the mind, the so-called art master is bold, in the dark silence, there is no fear and panic in the silence of the question, but unconsciously feel the heaviness of the breathing, subconsciously rationalize, breathe briskly, restore the original stability, a little careless, the breathing will be heavy again, and the footsteps will unconsciously increase the strength.

"The punishment of the little black house is really too heavy!"

With a sneer, Wen Chuanting shook his head, brought the cyan gourd to his mouth again, and took a sip, not only to heal his wounds, but also to break the silence with his movements, in case he scared himself.

The passage was long and dark, as Wen Chuanting had thought at the beginning, extending in all directions, and from time to time there was a fork in the road, each stretching and bending, and I didn't know where it led.

Don't think, don't choose, singular, only identify the middle one, even number, only choose the one facing the front, no, then choose the most recent.

He walked as if he was walking in a huge labyrinth, sometimes facing a dead end, and he had no ability to meet the mountains and open mountains, so he had to retreat and walk again.

There is no time in the mountains, there is no sun and moon in the ground, the monotony and silence have been accompanied by the left and right, the wounds on the body have not been recovered at some point, the monkey wine is no longer sent to the mouth, Wen Chuanting is immersed in thinking, and his consciousness is deep into the sea of knowledge, one after another bright sword light flashes, one after another sword intent shuttles, and there are more invisible fluctuations sweeping wantonly in the sea of knowledge.

The body trembled slightly, and the panicked sword intent came out of the body, and thousands of heroic lights bloomed, illuminating a passage.

The sword intent burst out, easily penetrating the stone wall, the sword qi was vertical and horizontal, cutting wantonly, outlining traces on the stone wall, he was like a humanoid giant sword, panicked and fearless.

"Haha......"

A long roar broke the silence, stirring in the dark passage, and pieces of gravel shook off from the place where the sword qi was cut, interrupting Wen Chuanting proudly, his body shook, and the sword qi burst out, breaking the falling gravel into powder, and in the uproar, it fell in a circle one meter outside Wen Chuan's body.

The fists were clenched, feeling the power contained in the body, the fingers were opened, and the five bright sword lights were coiled between them, flashing with strong light, the sword light shook lightly, swinging out small fluctuations, and the invisible air was repelled out, forming a slight air flow, and vaguely, the space trembled gently under this fluctuation, as if it could be broken at any time.

"I didn't expect that a blessing in disguise, a fierce battle, let me see my own shortcomings, and fighting against the strong is the only way to improve quickly!"

With a chuckle and a sigh of emotion, Wen Chuanting's shaking of his head stopped abruptly, his ears twitched, and a slight sound slowly passed through the passage.

"The sound of flowing water?"

With a hint of surprise, Wen Chuanting's eyes widened unconsciously, "Could it be that you have encountered an underground river?!"

Because the pace of cultivation stopped for further progress, it suddenly began to accelerate, and one after another afterimages remained behind him, and he followed the voice, eager to find the location of the underground river.

If there is an underground river, there will be an exit, this is the first impression that appears in his mind after hearing the sound of the water, whether it is true or not, find the underground river and then talk about it.

Moreover, when I heard the sound of water, I felt hungry in my mind. Although there is monkey wine, the energy contained in it can not only be used to heal wounds, but also replenish energy, after all, it is not as good as filling the belly through the mouth and tongue.

All the way through, I don't know how many turns, I took a few wrong passages, the sound of water flow is far and near, so that the eager question is a little crazy, eager to use the long sword, slash at the stone wall.

"Why do I have to follow the passage and not break a passage myself?"

At the place where the water was the loudest, Wen Chuanting stopped abruptly, hesitated twice against the stone wall with his long sword, and asked Chuanting to put it down, "It's better to look for it honestly, since the pangolin family has opened a passage here, it will definitely be able to lead to the underground river." ”

"I'm reckless and cut down, it's better to say if I can't find it, I find it, I don't know if it's in the upper or lower part of the underground river, if the passage is under the underground river, then it's a lot of fun!"

Thoughts rose and fell, and Wen Chuanting began to set off again, stopping and stopping, keeping his ears on the sound of the water, and using this to discern the direction at the fork in the road.

The hard work paid off, and when he couldn't help but raise his sword again, he finally saw hope.

After turning a corner, the sound of water suddenly became clear, and the sound of the noise penetrated the dark space and reached the ears directly. Take two quick steps, and the air is moist, giving people a feeling of coolness and coldness.

"Close, this is it!"

Step out, as if entering another world from one world, the humid air exudes an icy chill, the sound of rushing water is close to the ears, and the feeling of dampness and coldness under your feet makes Wen Chuan very sure, "Found it, the water is at your feet!"

In front of him, a faint wave of water rippled, slowly flowing to one side, and his appearance was nothing more than an insignificant ripple.

Put a handful of water into your mouth, the cold and refreshing penetrate the heart, pass through the blood vessels, spread throughout the body, excite the spirit and shiver, and release the relaxed joy of the whole body.

Shaking his head from side to side, except for the faint water waves in front of him, it was dark in front of him, and he couldn't see the other side, even if he had enough strength, he could only see a short distance.

Without thinking about it, he walked slowly against the river, and information about the underground river kept coming to his mind.

The channels for the collection and discharge of groundwater appear in limestone fields, and most of them are formed by the dissolution of groundwater along the fissures, and there are three types of forms.

Blocked by the aquifer, or the rise of the Quaternary crust is greater than the depth of dissolution, the formation of suspended underground rivers, small scale, distributed in the peak forest depression area.

The water surface of the river is the same height as the surface of the surface river, and it is often a channel connecting the surface river in the two adjacent dissolution basins.

The difference between the water surface and the ground height of the underground river is not large, and it is mostly distributed on both sides of the main river, with large scale and abundant water, and is suitable for the local erosion datum.

Compared with the current river form, "the scale is large, the water is abundant, and the flow velocity should be considered to be great, then this should be the largest one, and the underground river suitable for the local erosion datum, the water surface and the ground height difference is not large, of course, the second type is not excluded!"

"However, no matter what kind of thing it is, as long as you go against the current, you will find an exit!"

On this point, Q Chuan is very sure.

Walking farther and farther, the cold air gradually subsided, the temperature in the air gradually rose, there were water droplets dripping from time to time above, looking up, vaguely saw some stone cones hanging upside down, close to the stone wall on the side, there was a texture like water fluctuations.

In the bend place, there are occasionally some towering black shadows, and when they get closer, they are towering stalactites, depicting a series of textures, some oblique and horizontal, some curved and longitudinal, thousands of shapes, each different.

After walking another mile, I could faintly see the light in the distance, and the water waves scattered with sparkling waves.