This side of the creek was overgrown with weeds, but the opposite side was much cleaner, and a narrow sand beach meandered up the stream, like a long flax-colored band, and in order to facilitate the journey, several people waded through the river, and the three girls were so happy to take off their straw sandals, and walked barefoot on this soft beach, and their steps were much more cheerful.

The edge of the beach is a dense forest, the trees are not tall, but they are very dense, and the cool breeze in the woods makes people feel comfortable, and it is not easy to feel tired when walking here.

At first, Yun Yanuan was still wondering, but now he seemed to understand a little, and the reason was the oxygen content. It is almost a prehistoric ecological environment, even if there is some evolution, but there is no pollution outside the island, and the vegetation is dense, which makes the oxygen content of the air here particularly high, and in such an environment, it is easy to recover physical strength after strenuous exercise.

There are more and more plant species in the depths, ninety percent of them are plants that have never been seen before, and Yun Yanuan knows that they have officially stepped into the land of ancient times.

It was in this environment that the ancestors of mankind began a new civilization. Regardless of the so-called previous civilizations, after all, they are too far away from themselves and difficult to verify, but this is definitely the origin of human civilization, and it can be said that several people have come to their origins.

In the future, they will go deep into the prehistoric civilization step by step, find their own origin, if it is true that as Kexin said, human beings came from Mars, then can they find clues to migration here?

If all this is true, then, is the myth no longer a myth, but a real thing, and is Pluto the underworld of the human subconscious?

These thoughts made Yun Yanuan more anxious to go into the depths of this island, and even more urgent than to meet with other expeditions and escape from the island, this is not the desire to learn, he has never wanted to learn, thinking that this should be the subconscious of people, the subconscious of exploring where it comes, exists in the genetic memory of human beings, and cannot take the initiative to peek at it, but it is always pulled by her and affected.

Kexin is completely a scholar's posture, the strange grass flowers on the roadside, the occasional rock with an inexplicable pattern, she will carefully observe, study for a while, and then silently read her conclusions in her mouth, no pen and ink, she can only rely on this way to record her discovery, she has a super memory that she will never forget, I believe that if she can escape smoothly, her discovery will shock the world, and she will become a treasure of mankind all over the world.

"What is this?"

Diana hurried to the edge of the stream and took out a half-palm-sized sheet of sand and gravel in the water, but she could still feel that it seemed to have a strange pattern.

"Show me!" Kexin hurried over, took the flakes in his hands, and sighed realistically: "It's so heavy!" ”

"Well, it should be metal!" Diana added.

Kexin carefully wiped off the mud and sand on it with grass, and cleaned it up with stream water several times, revealing the general appearance of this thing.

The streamlined silhouette, but obviously broken in the middle, has a rattan-like pattern on it, although it is only half a piece, but it can't hide the simple charm, even the layman of Yunya Nuan can feel it.

"It's bronze, my God, it's bronze, what kind of technology is this, it can make bronze incorruptible for 10,000 years." Ke Xin admired.

"It's rotten!" Yun Yanuan looked at the mottled surface and said.

"What do you know, after 10,000 years, it hasn't turned into dust, and you can still see the original outline and pattern, this is simply amazing, it must be an alloy." can praise it in his heart, hold it in his hand and love it, and keep looking left and right.

Yun Yanuan looked at the bronze piece in Ke Xin's hand, thinking in his heart, he always felt that the outline of this thing was a little familiar, and suddenly said with a flash of inspiration: "This seems to be the lower half of a token." ”

Ke Xin looked at it for a while, and immediately nodded yes: "That's right, this should be a token, but the words on it are broken into two, I really can't recognize it, it's a pity, if only I could find the other half." ”

"That's the word? How do I look like a randomly drawn arc, so complicated! Yun Yanuan smiled.

"It must be a word, and if you guess correctly, it must be a pictograph, and the ideograms and phonetic characters will never be so beautiful, so natural and close to heaven and earth." Kexin still has a lot of research on these, so he naturally has the right to speak.

Looking at her like a treasure, Yun Yanuan couldn't help but smile and said, "Okay, then you hurry up and save it, maybe we can still meet the second half." ”

Ke Xin hurriedly nodded and said, "That's right, let's watch the river, don't miss it." ”

In a word, the whole team's journey slowed down, but Xin looked at the creek with good eyes, and saw something that looked a little like a token, so he rushed over, picked it up and looked at it, and the speed suddenly slowed down.

Although the creek is meandering, after several observations of the surrounding ant nests, the general direction of the team has not deviated, which saves several people a lot of effort and time, especially since there is this west beach on the edge of the creek, which is simply nature's thoughtfulness to people.

When it's hot, they wash their faces with stream water, but Yun Yanuan never allows them to drink the raw water in the stream, no way, this is when they were in the army, they were emphasized by the instructor countless times, and they became their own rules, integrated into the action, and could not be changed.

The water of the stream looks clear and transparent, pure and delicious, but that doesn't mean there is no hidden murder in it.

Many diseases can be transmitted through drinking water, such as cholera and typhoid, which can be fatal. Then there are parasites, the most common being bloodsuckers, which can parasitize your bloodstream and cause disease.

When he was in the rainforest training, there were a few times when he couldn't bear the heat and dehydration, drank the seemingly cool river water, and suffered a lot of crimes. One of his teammates, hiking on the other side of the rainforest, also drank the seemingly clear mountain spring water, but he didn't know that just a hundred meters upstream of where he drank water, the water was soaked in the rotting corpse of a dead wild boar.

For this reason, he suffered from a terrible disease, which made him lie in the hospital bed for two years, and the strong man of one hundred and sixty pounds lost less than one hundred pounds, and he was originally a good seedling of the special forces, but he was cut off.

This incident made a very deep impression on Yun Ya Nuan, at that time in a team, fighting with his bare hands, there were almost no opponents, only the brother who drank dirty water, was a Mongolian man, wrestling was very good, the two of them had a good relationship, often trained together, watching him leave the army, the impact on Yun Ya Nuan was very great.

At the same time, it also made him understand a truth, a responsible person, the first thing to do is to take care of himself, and then he can talk about other things. It is impossible to light a fire and boil water anytime and anywhere, which will delay too much time to move forward, so you can only let a few people drink as much water as possible during breakfast and lunch breaks, and only then will you burn water to quench your thirst until the next rest.

Yun Yanuan urgently needed a tool that could carry drinking water, but he didn't come across anything that could make a water bladder along the way, whenever he thought of this, he cursed in his heart that this island didn't even have a coconut tree, otherwise a mature coconut shell could solve a lot of problems.

The sky gradually darkened, but a few people knew that it was only afternoon, but the rotation of the island had brought the sun to the other end of the island, and the mountains inside the island were obscured, so the sky became dark.

Yun Yanuan glanced at the sky, some fluffy clouds were slowly pressing, almost occupying half of the sky, high accumulation of fluffy clouds, called cumulonimbus clouds in meteorology, usually followed by thunderstorms, this is very bad weather.

He looked around and saw a narrow stretch of sand, and the rest of the place was covered with vegetation, and he couldn't see clearly, but he knew that he had to find a suitable place to camp at this moment, because in two hours at the latest, there would be a terrible thunderstorm.

Several people need a place to hide from the rainstorm, to dry the ground to cause a bonfire, in addition to eating, the bonfire can guarantee that these humans who do not have sharp teeth and claws, this is not the home of humans, here they are in danger of being attacked by the aborigines at any time, there are animals, and even plants.