The three girls hadn't woken up yet, but Yun Yanuan had to wake them up because there was still a lot of work to do.

Diana and Maya quickly came to their senses under his call, and took the water vine handed over by Yun Ya Nuan, their eyes were full of doubts at first, but when Yun Ya Nuan pulled out the wooden cork and saw the cool drink coming out like a fountain inside, they couldn't help cheering, this whole small water vine was enough for three girls to drink enough.

The two of them stood up happily, and they didn't care about each other's saliva, you and I drank happily, but the heart was awakened by Yunya Nuan, but she was just about to stand up, but one fell to the ground with a stagger.

Seeing that her face was flushed, Yun Yanuan not only secretly screamed in her heart, but hurriedly walked over and tested her head with her hand, sure enough, she was having a fever, and the temperature was not low.

At this time, she needed to hydrate even more, and the water in the water vine had natural sugar, which was more suitable, so she asked Diana to bring the water vine over and feed it to Kexin first.

Diana and the others had already drunk almost enough, needless to say, after handing over the water vine to Yun Yanuan, they spontaneously went to the rocks by the sea to look for food. This is the specialty of the two of them, having lived on a small island in Fiji for so many years, it is their instinct to find food by the sea.

After drinking a lot of sweet water, Ke Xin's spirit improved a lot, but he was still having a high fever, which made Yun Yanuan very worried, in the wilderness, the cold virus would kill no fewer people than beasts.

Humans are homeotherms, and under normal circumstances, the temperature of the inner core of the human body is 36.8 degrees Celsius, and once the temperature of the inner core exceeds two degrees above and below, there will be trouble. And once the core temperature reaches 42.8 degrees, or less than 28.8 degrees, then it is basically certain to die.

The temperature of the human body is mainly emitted by the armpits, feet, head and mouth, and the head is responsible for dissipating 50% of the heat in the body, so Chinese medicine calls the head the head the head of the six yangs of the human body.

After a person has a fever, the head is hot, but the body feels very cold, at this time, the head will refuse to emit heat under the physiological control, so what to do now is to make her head feel cool and reactivate the heat dissipation function of the head of the six yangs.

Yun Yanuan smeared the remaining liquid from the water vine on her forehead, and gently rubbed it with her hand, so that the blood circulation in her head accelerated, and this was repeated more than a dozen times, but Xin fell asleep peacefully.

It's not a coma, but a deep sleep, which makes him worry a lot, and it's because of the cold caused by the sudden cold and hot and humid, as long as it is handled properly, the chance of survival is very high, but if it is the cause of trauma, it is not the same with a high fever, in the wild, it is fatal.

Diana and Maya brought back a lot of shells and conchs, they had no equipment, and they could only bring back these foods to satisfy their hunger, there was no fire, they could only eat them raw, but their hearts were cold, and they were not suitable for eating such hair products, let alone cold.

So Yun Yanuan stopped Maya from waking her up to eat, and explained the taboos of Chinese medicine, before he nodded, sat down and ate raw shellfish meat carefully.

The four of them have been wandering for a long time, and when they first arrived in this place, in order to avoid unaccustomed water and soil and gastrointestinal diseases, Yun Yanuan asked the two of them to eat as little as possible and eat more and eat a small amount to ensure that the digestive system can accept this environment. He himself simply ate a few shellfish and gave up eating, although he was still hungry.

Kexin's stomach is still empty, although the sweet vine can replenish sugar, but it can't replace the role of food, and his state also needs to take medicine, is there medicine here? This is inevitable, and the medicinal materials of Chinese medicine come from nature. Only medicine from nature can cure diseases, and it is better to forget about breeding.

Yun Yanuan asked Diana to take care of Kexin, after all, she was older, Maya was still too young, I was afraid that if there was a sea snake poisonous insect or something, the little girl couldn't handle it, so Diana had to take care of it, as for Maya, although she was small, she could help bring more things back. They need to prepare another water vine, as well as more soft grass and herbs.

Cold belongs to fever, generally as long as the heat and detoxification herbs can be used, just passing by here, Yun Ya Nuan saw some dandelion and honeysuckle, and some ginger grass, just these three, the general cold and fever can be treated.

This time he not only harvested some slender grass, but also cut a lot of hay, and then prepared to find a dead hardwood to use for fire. These things are easy to find and collected quickly.

Coming to the nearest ravine between the beach and the forest, this landscape has made a great change between the environment here and the outside beach, the beach outside is wet, but here it is very dry, people have to admire the magic of nature, a small barrier, changing the two environments a few hundred meters apart.

It was a thankless task to drill wood to make a fire on the beach, Yun Yanuan found two pieces of bluestone, and first smashed the dead grass between the two stones quickly and with small force, making the dead grass more fibrous, like yellow hairs intertwined together, and then clumping them into the shape of a bird's nest, and pressing a small pit with his fingers in the middle.

Then he picked up a hardwood stick sharpened with a saber and spun it rapidly on a small section of hardwood. On this section of hardwood, a small round pit was dug with a saber, and the surface of the garden pit was warmly divided into lines like steel files by Yunyanuan, which could increase friction and generate more heat.

Then pick up a wisp of fibrous dead grass and place it in the round pit, and rub and rotate the hardwood stick against the round pit.

Don't deliberately press down, that backfires, it's so relaxed and natural, all you want is to be faster, it seems very simple to say, but the mastery of the strength is really difficult, if you haven't practiced this ability, many people may give up in ten minutes, thinking that drilling wood for fire is nonsense.

After about half an hour or so, green smoke had begun to rise from the round pit, and Yun Yanuan knew that he was about to succeed, so he deliberately increased some pressure.

The green smoke is getting thicker and thicker, and if it is night, you should already be able to see faint red flames at this moment. He carefully poured the blackened and smoking dead grass from the round pit into the bird's nest-shaped dead grass ball he had just made. Hold the perimeter of the nest with both hands, leaving only the very center of the bottom without covering it with your palms.

Then he knelt on the ground, his hands and body were constantly raised and lowered, and his movements were gentle and even, and because of his caution, he was also extremely religious, and if anyone saw it, he must have thought that it was some kind of religious ceremony.

But in fact, this is not the case at all, the body kneels in order to lower as much as possible, the closer to the ground, the more stable the air, and the less the influence of the wind. The arms swing up and down to allow the air to slowly enter the flame from below along the center of the nest, accelerating the combustion and adding oxygen.

This action comes from the mural, at that time many scholars thought that it was a religious ceremony, the ancient people worshiped nature, so there was this action, but later in people's practice only found that the original mural action is to tell people the correct way to make fire.

The ancients were wise, but often stupid were certain experts and scholars with high academic qualifications.

When a visible flame rose in Yun Ya Nuan's palm, Maya screamed in surprise, children generally jumped around him, Yun Ya Nuan also smiled happily at her, put the fire in the palm of her hand on the ground, put some small dry branches on the flame, and after a while, a bonfire appeared completely in front of the two.

"Hey, Maya, you're here watching the fire, I'm going to fetch the two of them, and we're going to camp in this ravine tonight!"

Maya nodded happily and sat quietly beside the fire, the reflection of the fire in her big black eyes, beating incessantly, as if she had life...... No, that is the primordial power of life, and the reason why man is the spirit of all things is precisely because of the fire brought by the Suiren clan.