Chen Ziyang is really helpless, he has tried his best. Although Liu Cong didn't say anything these days, he could see from Liu Cong's eyes that Liu Cong was already anxious and about to get angry. No one thought that what was thought to be the simplest test about the Maoshan Land Division would make such a big mistake.

Another day passed, and Chen Ziyang and the others, who went out to find the Taoist holy land, still found nothing. After meeting with the two old real people, all three of them lowered their heads and sighed.

A slap in the face, a pure slap in the face. The hint has clearly pointed out that there will definitely be a dragon's lair in this mountain range under his feet, but as a Maoshan land master, he couldn't find it after looking for a few days, Chen Ziyang felt that he was really embarrassed.

In the past few days, he was so anxious that he couldn't eat or drink water, because he was in a hurry, Chen Ziyang's two lips were full of blisters, but no matter how anxious he was, there was never the slightest progress in finding the dragon's lair.

"It's still early, why don't we go out for a walk and have a look?" Yang Lai asked tentatively.

"No, I've gone back and forth three times in this mountain range, and if you count the other two teams, they've gone nine times in total, and it's the same thing to look for again, and there won't be anything missing." Chen Ziyang said in a hoarse voice.

Seeing that Chen Ziyang was not in a good mood, Yang Lei and Umbrella Shishuai hid aside, leaving him an independent space to calm down.

Chen Ziyang did not give up searching, although he stayed in place to rest, but his brain did not stop, but was running rapidly, rationally analyzing all the clues.

"It seems that this hidden dragon's lair is not simple, but no matter how deep it is hidden, there should be traces to follow, there must be something that we have missed, but why is there no clue?" Chen Ziyang thought in his heart.

He knew that at present, if he wanted to find this dragon's lair, it was no longer enough to rely on his eyes and legs, what he needed most now was an opportunity, an opportunity to remind himself that he could get a feeling of enlightenment.

Looking at Chen Ziyang, who had been sitting motionless in the distance for two hours, Yang Lei also sighed, and then he came to Chen Ziyang's side with a kettle.

"Drink saliva, you see your lips are full of blisters, and if you don't drink some water, your body can't stand it. This water is very good, it is made from the spring at the source of the creek, it is very sweet, and it has a fight with the mountain spring water in our house. ”

Although Chen Ziyang couldn't drink it at all, he didn't want to waste Yang Lei's kindness, so he took a few sips with the kettle and wet his dry lips. At this time, the sun was about to set, and Chen Ziyang stared at the sun that was not dazzling.

"Okay, don't think about it, follow me up the mountain, and I'll take you to see the spring where the water is drawn."

"What's so nice about the spring, haven't you seen enough since you were a child? What kind of spring we don't have there, it's worth all the fuss you make. Chen Ziyang said disdainfully.

Changbai Mountain area has a vast volcanic underground mineral water layer, especially from Jingyu County to Fusong County, where the underground mineral water resources are very rich, such as Farmer Mountain Spring, Lehaha, Kang Shuaifu, Heng Xiaoice Spring and other well-known water plants have built production bases here. Especially Heng Xiaoice Spring, the only production base in the country is built there.

"Don't say it, it's not that I'm unusual, the spring above is really very special, I've never seen anything like that. Let's go, don't think about it here, come with me to wash my face and be sober. After Yang Lei finished speaking, he pulled Chen Ziyang and walked up the hill regardless of it.

When he walked down the stream to the hillside, Chen Ziyang couldn't think of what kind of spring would make Yang Lei feel so fussed. Generally speaking, there are no more than three sources of mountain spring water in the mountains.

The first is that there is a huge cistern. Terrain such as a volcanic crater or a depression on the top of a mountain stores large amounts of rainwater, which then flows down through the gaps, like the Tianchi in Changbai Mountain.

However, the water is bare on the surface, and the water quality is not very good, and it is easy to be polluted. The advantage is that it has a large water storage capacity and a large water flow, and basically does not break the flow.

The second is that there is a large amount of water stored in the soil layer on the top of the mountain. Later, when the water accumulates to a certain level, the water will slowly seep out of the soil layer and collect into a stream.

The water quality is much better after being filtered by the soil layer, but the water storage is relatively small, and although it is not easy to break the flow, the amount of water flowing out is relatively small, and at most it can only be gathered into a small stream.

The third is groundwater. When the groundwater in the underground rock layer is squeezed, it gushes out of the cracks in the rock or cracks in the surface and becomes the source of water, and the place where the water gushes out is called a spring.

There are many springs that gush out of this kind of groundwater, but in some areas due to special geological formations, this groundwater will be squeezed down the cracks in the mountain to the high part of the mountain, and then flow out.

Because this groundwater is hidden under the surface, it is less polluted, the water quality is better, and at the same time, it has been filtered by the underground rock formation, and the impurities are very few, and the minerals in the underground rock layer are brought out, rich in various minerals, and it is the best mineral water.

After coming to the source of the stream, Chen Ziyang found that the source of the stream was a spring on a mountain. The spring is one meter square and about half a meter deep, and the water surface is about 30 centimeters high from the bottom of the spring.

There was not a lot of water in the spring, and you could see a small splash in the middle of the water, which was probably because of the water gushing out of the ground. There is a gap below this spring, and the water flows out of this gap, forming the previous stream.

"Did you take me so far just to see such a spring all over the street?" Although Chen Ziyang knew that this was Yang Lei's kindness, he couldn't help but ask. Although the springs above the mountain are rare, they are not very rare, and there are still a few such springs in my hometown.

"Don't worry, you're watching." After Yang Lei finished speaking, he picked up a stone from the side and blocked the gap in this spring at once. And he also grabbed some dirt from the surrounding area, and blocked the gap between the stone and the gap.

As the gap was blocked, the water in the spring had nowhere to vent, and the water level slowly rose. After a short time, the water rises to a height of 40 centimeters from the bottom of the spring.

As the surface of the water rose, the splashing on the surface of the water actually stopped, and the ripples on the surface of the water shook smaller and smaller, and finally the whole surface of the water was completely still, and it was obvious that no more water was gushing out of the spring.

Immediately afterwards, Yang Lei took off his helmet and scooped a few helmets of water in the spring and splashed it outside the spring. As the water level dropped, the water splashed again, and the spring spouted water again, but when the water rose again to a height of 40 centimeters, it stopped again.

"How's that, isn't it fun?" Yang Lei said as he scooped the water from the spring with his helmet again.

"How can you be like a big child, this kind of spring is because the water in the mountain is squeezed and gushing out, you plug the gap, and after the water level rises to a certain height, the weight of the water in the spring increases, just the same as the pressure in the mountain, so there is no more water gushing out of the mountain."

"Look at you, you are really unemotional, it is a very interesting thing, you have to use scientific knowledge to explain it, let you explain it like this, I also think it is not fun" Yang Lei opened his mouth and said very unhappily.

Then he was about to remove the stone that blocked the gap in the spring, but Yang Lei's hand had just stretched out, but he was grabbed by Chen Ziyang Meng.

Chen Ziyang stared at a pair of surprised eyes, looking at the calm water in front of him, as if he suddenly realized something, and then he turned around sharply and looked at the bottom of the hillside.

As he walked up the hillside, Chen Ziyang found that the slope became smaller and smaller the higher he went, and there were two low ridges on both sides of the hillside slowly converging. At that time, he realized that as the terrain rose, the direction of the two ridges became somewhat symmetrical.

This would have been nothing surprising, as there were countless ridges like this in the mountains, and they went in roughly the same direction. What intrigued Chen Ziyang was that there was a depression in the high part of each of the two ridges.

These two depressions are located at the ends of the two ridges, and the gaps are relatively large, which should have been naturally formed in outline. Through these two hollows on the ridge, you can see far away, and the sun is about to set in the depression of the western ridge.

"I said what are you holding my hand for?" Because he was too excited, Chen Ziyang grabbed Yang Lei's hand and trembled slightly, and pinched it very tightly, which made Yang Lei a little painful.

"Shh......h Don't be noisy. Chen Ziyang ignored Yang Lei's complaints, and just stood there quietly, staring at the sun that was about to set.

Ten minutes passed, and the sun slowly set in the west, little by little, into the depression of the ridge. At the same time, the moon slowly rose from the east, revealing a crooked crescent in the hollow of another ridge.

In certain latitudes and seasons, the sun and the moon often appear on the same day, which is caused by the particularity of the terrain and latitude, which is not so unusual. This is also often seen in the spring and autumn seasons in the Tohoku region.

At this time, the rising moon and the setting sun merge perfectly into the depression of the two ridges, and the outline of these two depressions is like the palm of a high hand, holding the sun and the moon together at the same time.

Seeing the strange scene in front of him, Chen Ziyang suddenly understood something, and he hurriedly looked at the location of the spring. The spring is located in a col between two not too tall peaks, right in the middle of the col and just above the mountain range.

"The sun and the moon are the same day! No overflow! Chen Ziyang was muttering to himself, thinking about something, and then he turned back sharply, and looked at the dragon-shaped broken mountain in the distance.

"The dragon is outside, holding the sun and the moon in his hands, oh my God, I am so stupid. No wonder I couldn't find it after looking for so long, I didn't know the true face of Lushan, only because I was in this mountain. Thunder, quick! Go and call Liu Cong! Chen Ziyang suddenly let go of his grip on Yang Lei's hand and shouted loudly to him.

Although Yang Lei didn't understand what was going on, seeing Chen Ziyang's expression, he estimated that it was very likely that the dragon's lair that everyone had been looking for had been discovered. So Yang Lei spread his legs and hurriedly ran down the hillside, shouting Liu Cong's name loudly while running.

After a while, Liu Cong led a few people to run in the direction of Chen Ziyang, and Zhang Linfu and Guo Huaxing were also among them.

After a group of seven or eight people came to Chen Ziyang's face, they gasped for breath while revealing puzzled expressions and inquiring eyes.

Chen Ziyang didn't talk nonsense with them, but pointed to the depressions of the two ridges with his two hands. Although after a few minutes, the moon rose a little higher and the sun set lower, but from this angle, the moon and the sun could still be seen wrapped in the depression of the two ridges.

Guo Huaxing and Zhang Linfu saw this scene, and they both suddenly realized something, and then the two of them came to the spring behind Chen Ziyang and looked at it for a while, and they both showed surprised expressions.

"Isn't this a spilling spring?"

"That's right, this should be a non-overflowing spring!"

"There is a non-overflowing spring here, and there is a strange scene of the sun and the moon on the same day, and the depression of the two ridges happens to hold the sun and the moon, so the wonder should be a good cave, is this the dragon's lair?"

Zhang Linfu and Guo Huaxing looked left and right, constantly changing their positions, looking at this hillside, and then the surprised expressions of the two people slowly turned into disappointment.

"Something is wrong, you can't see any dragon's lair here? We've been here before, and it's not far from our camp, so we've been here the most.

Although we didn't see the wonders of the sun and moon at the same time, we have seen it here several times, and there should be no dragon's lair. Zhang Linfu said to Chen Ziyang very strangely.

"I just have a guess now, but I estimate that eight or nine is not far from ten, while it is not dark yet, let's verify it now." After saying this to Zhang Linfu, Chen Ziyang asked Liu Cong, who was at a loss:

"Liu Cong, I remember that you brought a drone this time, didn't you? The farthest that thing can fly. ”

"Huh?" Liu Cong didn't expect Chen Ziyang to suddenly ask such a strange question, what do you want the drone to do at this time.

Although this time, in order to reduce the load, the large drone used in the Absolute Yin Land was not brought, but Liu Cong still brought a small drone.

"There is one, but it won't fly far, I guess...... Fly a maximum of five or six kilometers, and the battery may be dead. ”

"Five or six kilometers? It should be enough. Hurry up and order someone to bring the drone, I'll be of great use. ”

(End of chapter)