The back of the giant python leaving with a group of snakes quickly disappeared in the eyes of everyone, and everyone breathed a sigh of relief, they didn't expect a human-snake battle to end in such a way.

"Let's go, let's go to the front and get some water, everyone eat, and we'll continue on our way." Gao Yunliang stretched out his hand and pointed to the bottom of the bare hill not far away.

Cheng Yifan looked at the waterhole, and the picture that appeared when he stroked the giant python just now flashed in his mind, "A huge head, the head of an unknown creature." ”

Cheng Yifan should have reminded everyone not to go near the waterhole. "It's a bit inappropriate for their group to tell them that there might be an unknown giant monster in this waterhole, just after they had just recovered from a big battle. "The most important thing is that it was just a phantom in my mind, maybe it was because I was nervous and physically exhausted when I stroked the giant snake just now.

Recently, he has been hallucinating more and more times, and Cheng Yifan even wonders if there is something wrong with his body, otherwise his myopia will suddenly get better? And what he's seen lately, his movement speed is getting slower and slower, especially when he's emotionally stressed, and he's prone to hallucinations.

"Let's go over first, and when I go back this time, I must go to the hospital to have a good check-up." Cheng Yifan secretly made up his mind in his heart.

It is a square waterhole with a bare hill against its back, small but high, like a thumb pointing straight to the sky.

After the water flow on the mountain merges into one in the middle section, it goes down vertically to form a waterfall, the waterfall is not wide, and the amount of water is not large, but because of the high mountain level, the impact of the waterfall falling is extremely large. The water that falls into the pool is like an iron rod, straight into the pool ~ into the pool; According to the estimation of this impact force, the bottom of the pool should be very deep, at least 20 meters or more; The pool is not big, but the water is very blue, as blue as the sea.

The other three sides of the waterhole are grassy fields, and the water is more than ten meters deep from the ground, like a deep pit in the grassland.

The four sides of the deep pool are limestone boulders, like stalagmites, standing upright, and the deep grooves can be seen from the deep grooves of the waterhole.

Standing on the grass and looking down is like being on the edge of a cliff. Up to the waterhole, there are hard rocks and no vegetation.

On the left side of the waterfall there is a small stone staircase chiseled with a large meadow, not so much a stone staircase as a stone crevice, which is hand-hewn, very narrow, only allowing one person to pass through, it should be chiseled by the previous people to facilitate the water from the waterfall. There is no other way to go down to this deep pool except for this small stone step.

The crowd found a relatively flat meadow next to the waterhole and sat down. After sharing some dry food with each other, they swallowed it raw.

Looking at the clock, it was already past one o'clock in the afternoon, and everyone was already hungry and thirsty after repeated physical exertion. Gao Yunliang and Heizi hastily swallowed a piece of bread and took everyone's kettle and went to the crack in the stone, obviously to fetch water.

Cheng Yifan got up curiously because of the strange picture in his mind, and leaned towards the edge of the waterhole.

I saw a pool of blue water under the hanging wall, bottomless, dark and deep; Cheng Yifan was deeply amazed, his body trembled slightly, and the previous illusion resurfaced in his mind: "Huge head, unknown creature." ”

At this time, everyone had already eaten, stood up one after another, and enjoyed the beautiful scenery, as if they had forgotten the previous big station.

Ye Feifei and Huang Shengnan, as well as Bai Su and Li Tieshan, the injuries suffered by the four of them were not serious, and after taking Gao Yunliang's elixir, their complexions had recovered.

At this time, Zhao Yawen got up and walked over to Cheng Yifan. It's also strange to say that since the scene in the passage, Zhao Yawen has always looked at Cheng Yifan unconsciously, but she didn't realize it.

She gently patted Chengyi's shoulder on the back, and smiled as freely as ever: "What are you thinking, do you miss your python lover?" Hehe. ”

Before, Cheng Yifan was still worried that Zhao Yawen would be worried about Zhao Yawen because of the episode just now, and he didn't dare to face him calmly. Now looking at her relaxed conversation, it is obvious that she has not taken what happened just now to heart, and she is unconsciously relieved.

Maybe it's the reason why Cheng Yifan hasn't been in love, he doesn't know that women's thoughts are often the opposite of their actions, and the more they pretend to be nothing, the more they care.

After being stunned for a moment, Cheng Yifan smiled lightly: "Haha...... This lover is too big! ”

Zhao Yawen saw that Cheng Yifan's eyes were dilated, as if he hadn't figured out something. She took a small step forward, and at this time, her body happened to be in line with Cheng Yifan, and after her eyes overlapped with Cheng Yifan, she understood what Cheng Yifan was thinking.

"Are you wondering if this is a dead pool, where does this water go?" Zhao Yawen asked Cheng Yifan, who was in a daze. Zhao Yawen's voice was not small when he said this, and the people next to him could hear it.

In fact, not only Cheng Yifan, but also Jin Lanlan and everyone who had never entered Wuyun Mountain were also puzzled by this matter.

They always thought that this pool was strange, but they didn't know what it was, not only the dead pool, but even the color of the pool was different from the one they saw.

Bai Su felt even more weird, because he felt that this waterhole was very similar to the shape of the pendant of the necklace around her neck. This necklace was given to her by her grandmother when she was born. said that it could bless her with a safe life, so that she must carry it. But it was also that year that her grandmother disappeared inexplicably. I heard that the entire Li family couldn't find it with all their efforts at that time, and in the end, it was my grandfather Li Zhan who ordered to give up the search.

The chain was strangely shaped, and with such a resemblance to this place, she felt that this necklace must have something to do with this waterhole, and even to the missing grandmother.

Bai Su came over to thank Cheng Yifan, and when he walked to them, he suddenly heard Zhao Yawen say this, and without waiting for Cheng Yifan to answer, he abruptly interjected and asked Zhao Yawen: "Do you know where the water went?" ”

Zhao Yawen looked at Bai Su in surprise, wondering when she came over, interjecting and interrupting the other party when others were talking, this is not the style she should have.

Bai Su realized his abruptness, and hurriedly said: "Oh, I originally had something to find Cheng Yifan, and I just happened to hear your conversation............ Sorry to bother you. Bai Su replied with some embarrassment.

"It's okay, it's okay, it's just small talk, don't worry." Zhao Yawen replied calmly, but there was an inexplicable trace of sour vinegar in her heart. It's just that the feeling is not very strong and fleeting.

Zhao Yawen took Cheng Yifan's question and said: "Do you remember that I told you before that Wuyun Mountain is a karst geology, and karst caves and underground rivers are widely spread?" After asking, without waiting for Cheng Yifan to answer, Zhao Yawen glanced at Bai Su again and continued: "There should be a big karst cave under this pool, and it is connected to the underground river, and this pool of water flows through the cave, as for where it flows, I don't know." ”

"Then why is this pool of water blue?" The people who were standing not far away also leaned over curiously at this time, and Ye Feifei, who was walking in the forefront, asked first.

Zhao Yawen smiled at Ye Feifei and said, "Do you see that the surroundings of this waterhole are different from the waterholes you have seen before?" ”

"Nothing special, except for the lack of vegetation." Cheng Yifan, who had been looking at the bottom of the pool, replied.

"Well, unlike this meadow, this mountain and this waterhole are alkaline limestone with a high pH value, and the pH value is close to 13, and this kind of soil can't grow plants at all, so this mountain and the mouth of the pool are bare and without vegetation all around." Zhao Yawen is like talking in class, step by step.

"Does this have anything to do with the color of the water?" Cheng Yifan was still puzzled, and others also cast puzzled glances.

Looking back at everyone, Zhao Yawen smiled and said: "The main components of this limestone are silica, iron oxide, calcium oxide, magnesium oxide and sodium oxide. Among them, the oxygen and hydrogen in the oxide are combined to form water, and the solid sodium, magnesium, potassium, and calcium are precipitated, so this pool of water is rich in sodium, magnesium, and potassium. After Zhao Yawen's explanation, Cheng Yifan understood that this pool of water has the same compound as seawater, and the bottom of the pool is deep so it is blue.

Cheng Yifan looked at Zhao Yawen with some admiration and said, "Aren't you learning Chinese, how can you understand so much chemistry?" ”

"Hehe, there's no way who calls my sister a scholar!" Zhao Yawen replied jokingly.

Zhao Yawen is true, although she is not as smart as Jin Lanlan and has business talent, but she has an extraordinary memory. In the past, his personality was relatively quiet, except for Gao Yunliang and a few others, he rarely interacted with other people. So she spent all her extra time reading books, reading everything, astronomy, geography, chemistry, physics, and even the "Feng Shui Chronicles" in the Zhao family's grandfather's study.

At this time, Gao Yunliang happened to come back with a few bottles of water, while Kuroko was still filling other kettles on the stone steps next to the waterfall.

As soon as Gao Yunliang saw that these people were gathered around this pool to listen to Zhao Yawen's explanation, he knew what was going on.

thought to himself: "This time I brought Zhao Yawen into the mountain, and I really brought it right." ”

There are so many strange places in this Wuyun Mountain, plus this group of people with extremely curious people, if he is all to explain to this group of people, it will not be exhausting to death.

Besides, I don't like to read, and I don't know as much as Zhao Yawen.

"With Zhao Yawen at this time, it is equivalent to bringing an encyclopedia, or the kind with its own assistant function!" Thinking of this, Gao Yunliang secretly laughed proudly.

He smiled at everyone and said, "What are you talking about, listening so intriguedly?" But you just ask Yawen, she's an encyclopedia, if you don't understand anything, just ask... Just ask... Hahaha! ”

Gao Yunliang said as he twisted the kettle in his hand, then grabbed a handful of soil from the ground and put a small part of each kettle into it.

Everyone was puzzled, not knowing why Gao Yunliang did this. "Yunliang, what are you doing here?" Jin Lanlan asked first.

"Confused, huh? Ha ha...... It seems that you are just like me, you have read all the books in vain and returned them to the teacher, haha...... The encyclopedia will explain it. Gao Yunliang looked up at everyone, and then smiled evilly at Zhao Yawen.

Zhao Yawen pouted angrily, and then explained to everyone with a smile: "The water flowing down from this mountain has an abnormally high content of alkaline oxides, especially calcium oxide, if you eat it directly, as soon as this water enters the stomach, it will decompose into a precipitate when it encounters gastric acid, and the precipitate cannot be absorbed and decomposed by the intestines, and it will form a stone body in the body." ”

Then, Zhao Yawen pointed to the kettle in Gao Yunliang's hand and said: "A pot of water, drinking it at one time, can immediately cause a coma, if you drink two bottles at a time, the accumulation can cause stomach distension and pain, and even die of stomach bleeding." ”

Everyone understands the reason, but Zhao Yawen seems to be exaggerating, even if the calcium, magnesium, and potassium content of two pots of water is high, it will not make people bleed in the stomach!

Gao Yunliang looked at everyone's suspicious eyes, picked up the water shell in his hand and raised it and said, "What? If you don't believe me, take a look at the pot for yourselves. He reached for the kettle.

Everyone looked into the kettle, and they were really frightened. Inside the kettle, there is a layer of white substance, which wraps the black soil that Gao Yunliang has just put in, and the white substance is combined with the black soil, accounting for one-third of the thickness of the kettle. It is conceivable that if you drink it directly, this alkaline white characteristic will precipitate in the stomach and intestines and cannot be digested, and even the stomach will be overwhelmed and die.

Without waiting for the crowd to finish their exclamation, Zhao Yawen continued: "At the beginning of all things, one is intangible, and one gives birth to two, two gives birth to three, and three gives birth to all things. The two fingers in this are yin and yang, yin and yang can be combined into one, and each is an independent body, so yin and yang are the foundation of all things."

"Yawen said simply, they don't understand, haha." Gao Yunliang said with a smile.

Zhao Yawen stuck out his tongue at Gao Yunliang and smiled: "Why don't you come?" ”

Gao Yunliang shook his head and said that he couldn't do this job.

Zhao Yawen made a helpless look and continued: "That is to say, everything in this world is composed of yin and yang, single yang is not prosperous, single yin is not long, yin and yang are mutually restrictive, there is good and evil, there is poison and medicine, there is this high-alkali water, there is high-acid soil. They cannot be used alone, but if they are neutralized, they are neutral compounds with no acid or alkali. ”

Li Tieshan was confused when he heard this, scratched his head and laughed: "Miss Zhao, I'm a big man, I really don't understand, you just tell me if this water can be drunk, haha." ”

"I can drink, I can drink... Hehe! Zhao Yawen replied with some embarrassment.

"Haha......" Everyone couldn't help laughing when they saw Li Tieshan's embarrassed face, and even the unsociable Jin Shipeng and Jin Shijie felt that the atmosphere at this time was very harmonious. It's as if they're really a bunch of ordinary travelers. All their evil thoughts, their respective missions, and their own goals were overshadowed by laughter at this moment.

Unfortunately, this atmosphere of harmony did not last long, and was broken by a loud roar.