Speaking of which, Li Sanming's sound of getting up was very small, but he still woke up Davao Khan, who was dozing off. As a member of the Black Mamba Guard, everyone was very alert, and a slight noise could touch their nerves.

"Sorry, I have the habit of getting up at night. I was busy rushing to travel today and actually forgot to pee." Li Sanming smiled apologetically at Pang Xiaonan.

"It doesn't matter, but the jungle is too dangerous. Even if you are in a hurry, you have to tell us, otherwise something might happen." Pang Xiaonan accompanied Li Sanming to a big tree about 10 meters away from the fire, "You pee, I'll go there to guard it."

Pang Xiaonan walked to a place more than one meter away from Li Sanming, and kept a watch on him vigilantly, carefully guarding the situation around him.

Professor Li Sanming finished the convenience under the shadow of the big tree, and Pang Xiaonan accompanied him to the fire and returned to the old place.

"I'll sit with you." Professor Li Sanming did not return to the place where he was sleeping, but sat down next to Pang Xiaonan.

"Aren't you sleepy?" Pang Xiaonan still thought Li Sanming should continue to rest.

"When I just finished eating spider meat, I was really sleepy," Li Sanming leaned his back against a big tree, looked up at the starry sky, "But now I have been sleeping for a few hours and have gotten up and peeing again. I'm afraid I won't be able to sleep for a short time."

"I heard that when people get older, they sleep less at night. Is that true?" Pang Xiaonan is good at sucking spiritual energy, but he heard that the older people are, the less sleep they need, and I don't know why.

Li Sanming nodded and said, "This is a natural law. When people reach old age, the secretion of pineal voxels that control sleep will be reduced, and the ability to regulate sleep will be weakened. Therefore, the elderly are more likely to have prolonged sleep time and reduced deep sleep time, and the incidence of insomnia is significantly increased compared with young people. At the same time, when people are older, the higher the incidence of various underlying diseases, some diseases can affect sleep or cause insomnia, such as cough, palpitations, dyspnea, hypertension, diabetes, osteoarthropathy, mental system diseases, etc. Secondly, the environment also affects people's sleep conditions, especially in summer, when the weather is hot, it is not conducive to falling asleep. Again, psychological factors will also affect sleep. Some people are delicate and sensitive and think too much, and they are prone to insomnia."

"The professor still has research on insomnia?" Pang Xiaonan found that the open fire in the fire was about to go out, so he hurriedly walked up to add some firewood. During the time he was meditating, the fire was not extinguished. It should be the firewood added by Wu Yongqiang or Buenosky.

When Pang Xiaonan came back, Li Sanming said: "I have research on insomnia because I just entered the old age stage. We do research and always like to study topics related to ourselves, especially this problem that bothers me in daily life. You think, if you can't sleep well, you will lose energy during the day, so I always hope to improve my sleep and improve my quality of life."

"Then have you developed a special medicine for insomnia?" Pang Xiaonan smiled. If there was a special medicine that could treat insomnia, it would definitely be crazy. However, Li Sanming is not in the medical field, but only a geologist.

"Haha, I really found a special medicine for treating insomnia," Li Sanming's eyes were burning with a bonfire. The firewood from Pang Xiaonanjia was very dry just now and it became very hot. "Of course, I just found that this medicine was useful to me. In fact, it was invented by someone else. This medicine is called melatonin."

"It sounds like it has nothing to do with insomnia." Pang Xiaonan did not have the trouble of insomnia, so he had no idea about treating insomnia.

"Melatonin, also known as melatonin, inhibition of melatonin and pineal glandin, is an amine hormone produced by the pineal glands of mammals and humans. It can make a cell that produces melanin shine, so it is named melatonin. It exists in many organisms, including algae to humans, and its content level varies with time every day."

Professor Li Sanming pointed to a part of his head and said: "Melatonin is the earliest biologically active substance found in the pineal gland. When mammals are in the dark, the melatonin secretion activity will be immediately strengthened; when it turns into a bright environment, it will stop secretion. The rhythm of melatonin secretion can be measured from the urine as light changes. Other factors such as sleep, diet, mental state and stress also have certain effects. Injection of melatonin in the hypothalamus can inhibit the secretion of gonadotropin, but it is also observed that melatonin can act directly on the pituitary gland. Therefore, melatonin can inhibit the secretion of gonadotropin through the hypothalamus and pituitary gland. In addition, melatonin receptors have been found in the ovaries, which means that this is also the site of action of melatonin."

"As for the effect of treating insomnia, it can be said that scientists discovered it by accident," Professor Li Sanming was playing with a small wooden stick in his hand. "Scientists have found that melatonin can shorten the wake-up time before bed and sleep time, improve sleep quality, significantly reduce the number of wake-up times during sleep, shorter light sleep stage, prolong the deep sleep stage, and lower the awakening threshold the next morning. It has a strong function of adjusting the time difference. It is mainly used for whitening and moisturizing cosmetics, and is also commonly used in hair-generating products. The biological functions of melatonin, especially the health care functions as dietary supplements, have been extensively studied at home and abroad, showing that it has many physiological functions such as promoting sleep, regulating jet lag, anti-aging, regulating immunity, and anti-tumor."

"It seems that you often use melatonin, and you understand the principle of melatonin so well." Pang Xiaonan admired Li Sanming's theoretical knowledge very much. He had to memorize these academic things, and it was almost incomplete to say a sentence, which was too difficult to pronounce.

"My research on sleep is not just melatonin," Li Sanming broke the small wooden stick in his hand. "I have studied everything related to sleep. You know, I have studied geology all my life, and sometimes I am very tired of it. I always have to find something else to change my taste, so I started to study sleep, and I found that I was very interested in insomnia."

"What else have you developed?" There are many causes of insomnia, and Pang Xiaonan believes that melatonin is just one of the solutions.

"Look at them?" Li Sanming picked up the small wooden stick and pointed at the scientific expedition team members and the Black Mamba guards who slept on the ground with a very sweet heart. "Why do you think they sleep so well? There are definitely people who usually suffer from insomnia here, but why do they sleep so much before eight or nine o'clock in the evening?"

"You're too tired during the day." Pang Xiaonan's view is simple and crude.

"Yes, it's because they are tired, so they fall to the ground and fall asleep." Li Sanming nodded, and the small wooden stick poked the ground. "You go to the construction site to ask the bricks and cement workers who do physical work. Do you ask them if they will suffer from insomnia? They don't have the energy to lose insomnia at all, and they fall asleep when they get home. They even fall asleep while sitting and eating. This is all tired."

"So, to treat insomnia, just do more physical work?" Pang Xiaonan was enlightened. If a person always had insomnia, just go to the construction site to move bricks.

"No, no, no," Li Sanming shook his head and yawned. "Doing more physical work can solve insomnia, because when the human body is highly tired, it is easy to fall asleep, but it is not the case. Some people are obviously very tired, but they just can't sleep, and they are thinking about it all. This is the ultimate fatigue."

"Are you so tired that you can't fall asleep?" Pang Xiaonan frowned. This was the first time he heard this statement. He was so tired that he wouldn't be tired.

"So the real reason for insomnia is here." Li Sanming pointed to his temple with his right index finger.

"Unsleeping is ultimately a psychological problem, not a physiological problem." Li Sanming sighed. "I have gone through several stages of insomnia. For a while, I could fall asleep quickly with melatonin. Later, I thought that relying on medicines was not possible, so I found a way to work physically. But sometimes even if I make myself sweaty and my limbs are so tired, I still can't sleep while taking a shower and lying on the bed, and I was thinking about it all in my head. Finally, I realized that the person who tied the bell must be untied. It is a matter of the head that cannot sleep, and it is not feasible to solve it physically."

"So what's your solution in the end?" Pang Xiaonan did not expect that there were so many tricks for insomnia that made top scientists suffer.

"Only a person is completely relaxed and happy, he can sleep well. Otherwise, even if he falls asleep, the quality of sleep is not high." Professor Li Sanming made a summary speech, which made Pang Xiaonan deeply feel the same, because as soon as Pang Xiaonan lay on the bed, he didn't think about anything, and didn't even think about going to bed sooner, because the more you can think about falling asleep early, the less you can't sleep.

"I am worthy of being a professor," Pang Xiaonan gave Li Sanming a thumbs up, "I have a high point, this insomnia problem has been easily solved by your simple words."

"Haha, your skill in flattering is quite good," Li Sanming picked up the wooden stick and pointed at Pang Xiaonan, "It seems to be stronger than your skill in fighting monsters."

"Where is it, this is my soft power." Pang Xiaonan was not humble at all because his soft power was there.

"Now, as long as I lie on the bed, I don't think about anything, and I'll empty my brain, I will fall asleep naturally." Professor Li Sanming continued to exchange experience in insomnia treatment with Pang Xiaonan. "Of course, this premise is that you should not do anything that you use your brain before going to bed, otherwise you will not be able to do things you don't want to do."

"I've learned it. I don't have any insomnia now," Pang Xiaonan clasped his fists, "But I really have insomnia. I will definitely try this with your method."

"You, you definitely can't use my method, because you are not a person who will suffer from insomnia." Li Sanming couldn't think of how a tough guy like Pang Xiaonan could suffer from insomnia. What would happen to those who collapsed in front of him and did not change their colors?

"I have been awarded the professor too much. People always have times when they are upset. They are not gods. How can they be happy every day?" Pang Xiaonan has not experienced troubles, but he has resolved them better. Of course, perhaps those troubles are just small troubles and are not enough to bother him too much.

"I have a question, I want to communicate with you." Professor Li Sanming's face suddenly became serious, and he lost the smile that had been chatting and laughing before.

"What's the problem?" Pang Xiaonan was a little surprised, why the atmosphere suddenly became tense.

"Have you noticed that the deeper we go to the jungle, the greater the danger we encounter?" Li Sanming looked at Pang Xiaonan for a moment, because these dangers were directly related to Pang Xiaonan and he had made great contributions.

Pang Xiaonan nodded and said, "I also feel this way. It turns out that the more we go to the back, the more powerful the monsters we encounter."

"Does this mean that the deeper we go to the jungle, the more people will die?" Professor Li Sanming watched his assistants and partners die one by one, and he couldn't help but feel a little psychologically shady.

Pang Xiaonan pursed his lips and took a deep breath. He was unwilling to tell the cruel fact, "Dead people are inevitable. Just like monsters attacking us, they inevitably die. There is always one side between us and the monsters. After all, we came to other people's territory, and they felt invasion and could not live in peace with us."

"Since we know we are going to die, why do we still have to go inside?" Professor Li Sanming was not afraid of death, but was just worried about fearless sacrifice. "If we retreat now, we might be able to save a lot of lives back."

Several people died in one day. According to Li Sanming's calculations, if you go back now, there will be the same danger on the way. At worst, a few more people will die, and then half of the population of this team will be able to retreat.

"You mean, let's stop and go home?" Pang Xiaonan looked at Li Sanming, not knowing what he was selling in the gourd.

"I am the captain of the scientific expedition team. I need to evaluate the results of this operation," Professor Li Sanming finally expressed his reasons. "If we have discovered some of the truth, we can retreat. At least we know that there is a new world in the Blos disc, and this new Blos is home to prehistoric beasts. We have also collected some samples, whether it is animal, plant or land. This is already very valuable. If we do not retreat in time and have to wait until the entire army is wiped out, then this hard-won discovery will be submerged in this mysterious jungle."

Professor Li Sanming is talking about the facts. Although the current discoveries are not very rich, at least compared to previous generations, there have been breakthrough progress. It is already a very amazing discovery to bring these discoveries back to Hallelujah Star Continent. It is a very surprising discovery. It is left without worrying about burning firewood. When we organize an expedition team next time, we will have more experience.

"But Professor Li Sanming," Pang Xiaonan felt that it was still inappropriate, so he left like this, and it was impossible to say anything. "We finally came to New Bloss, and we had sacrificed several teammates, so we left like this. How can we be worthy of them? Are you satisfied with just finding out just by finding out? It's just that a place suspected to be a prehistoric continent is of no use for studying science. We should at least understand why this environment is formed here, right?"

Pang Xiaonan is not a scientist, but his intuition tells him that this level of discovery is not enough to support the purpose of this trip. What he wants to know is why the Bloss disc can block all human detection activities, and whether there are higher civilizations here.

Especially the eyes that appeared in Pang Xiaonan's spiritual consciousness did not look like an illusion. It seemed that someone had been staring at this team of uninvited guests. What was that? Pang Xiaonan was eager to find the answer.

"But you don't have many bullets anymore, and we don't have much supply anymore." Professor Li Sanming expressed his concerns. As the captain of the scientific expedition team, he is more sensitive to these. "If there are big spiders like the ones I encountered today, I believe your firepower may not be able to kill them. Yes, you are very powerful, but can you protect so many people alone?"

Pang Xiaonan fell into deep thought. Li Sanming said that the weapons of the Black Mamba Guard were almost out of ammunition and food, and the dry food on them really couldn't last for a few days. The most deadly thing was Danshui. If you couldn't find fresh water that you could drink, the team would not be able to hold on for a day.

"There is always a solution, professor," Pang Xiaonan looked up at Li Sanming, his eyes full of determination, "Believe me, everything will be possible. Of course, if you want to retreat, you will discuss with Major Booktonlin tomorrow morning. If everyone has no objection, I will obey the order."

Li Sanming looked at Pang Xiaonan as if he was looking at a student he loved the most. The road of exploration is full of thorns, and the road of scientific research is the same. He took his students across mountains and rivers to find fossils before, but he never gave up. But this time it was different. There are too many unknown dangers this time, and there is a possibility of losing his teammates every minute. As the captain of the scientific expedition team, he must be responsible for these national treasure-level scientists.

"Okay, I will discuss with Captain Booktonlin tomorrow morning. I'll go to rest first. Thank you for your hard work." Professor Li Sanming got up, walked to the bonfire, threw the broken wooden stick into the fire, and then slowly lay on the grass and fell asleep again.

Pang Xiaonan looked at Li Sanming falling asleep. Although he felt a little unwilling to accept his words just now, he soon figured out that he was just a mercenary and should stay or not. Since he knew that there was such a place, he could find a way to come over in the future. No matter what, practicing here is excellent.

Thinking about the scene of practicing in New Bloss alone, Pang Xiaonan couldn't help but feel happy. At that time, there was no need to worry about someone who wanted to protect him. He just needed to practice and upgrade his life to the fullest. How happy it would be to live.

Pang Xiaonan continued to meditate, but this time he no longer greedily absorbed the spiritual energy around him, because the spiritual energy in his body was full of, just like the stomach and intestines were filled with food, and he could no longer hold it.

The spiritual energy flowed slowly around Pang Xiaonan. Pang Xiaonan only took a light breath occasionally. He spent more time resting, and observed the fluctuations of the spiritual energy around him, acting as a radar to monitor the approaching danger for everyone.

Time passed by minute by minute, Davao Khan was already sleepy, and Wu Yongqiang and Buenoski were also yawning, but they kept holding on. After all, this was related to the life safety of more than a dozen people. As the highest purpose of the Black Mamba Guard, the lives of customers are above everything else, and this iron law cannot be violated.

At around 1 a.m., Pang Xiaonan felt someone get up again. He slowly opened his eyes and saw Booktonlin climbing up.

Booktonlin walked gently to Pang Xiaonan. Pang Xiaonan did not get up, but said to Booktonlin: "Captain, you have a rest, I can still withstand it."

"No," Booktonlin looked at his watch, "you should be very tired. Look at Davao's sweat. He was almost dozing off and fell to the ground. Let's wait in the middle of the night."

As the captain of the Black Mamba Guard, Booktonlin has a good grasp of the concept of time. He can wake up naturally without anyone calling at the moment. This is a habit developed in the long-term combat in the wild. He can control his biological clock and not use an alarm clock. He wants to wake up at what time he wants.

"Then you go and call others up, I'll call them to sleep." Pang Xiaonan walked to Davao Khan and patted his shoulder. Davao Khan immediately woke up.

"You fall to the ground and sleep, and you'll be replaced and you'll be vigilant." Pang Xiaonan pointed to Booktonlin and signaled that the Black Mamba Guard would change the guard.

"Well, okay." Davao Khan fell happily on the grassland as if he was about to amnesty, fell asleep deeply, and completely relaxed his whole body and mind.

Pang Xiaonan looked at Buenoski and Wu Yongqiang again. Although the two were yawning, they noticed that Pang Xiaonan and Booktonlin got up and were now looking at Pang Xiaonan.

Pang Xiaonan tilted his head, closed his hands and pillowed under his head, and made a sleeping move, indicating that Buenoski and Wu Yongqiang could sleep.

Buenoski and Wu Yongqiang nodded at the same time, and then they lay comfortably on the grass like Davao's sweat, and snored for a moment.

The men of the Black Mamba Guard are all straightforward men, and they are all in tune when they snore. They are indeed too tired during the day and are physically and mentally exhausted. Once they fall asleep, they have to breathe the air around them. The air not only contains oxygen, but also spiritual energy, but ordinary people don’t know.

In fact, this principle is obvious. Why can ordinary people survive for a few days without eating or drinking, and only last for dozens of seconds without breathing? Is it just because the air contains oxygen?

When a baby is born, he will inhale his first breath and cry. At this time, he has the spiritual consciousness, that is, he has real life, and this moment is also the moment when he is officially born.

Aura gives human life.

Booktonlin woke up Li Yis, Nandegrad and Wu Zhen, and then returned to Pang Xiaonan's side.

Pang Xiaonan was still sitting there without falling asleep. Booktonlin sat next to him and said, "You go to bed, let's guard next."

Pang Xiaonan smiled and said, "Captain, don't worry about me. It's the same whether I sleep or not, I'm not sleepy."

Booktonlin turned his head and looked at Pang Xiaonan and whispered: "Actually, I know you must have some skills. When you were on the boat, you didn't sleep much. After such a day, I think you don't have any sleepiness. What kind of powerful skills does it mean that you don't have to sleep?"

Booktonlin knew very well that if he didn't eat, he would collapse if he didn't sleep. In the past, they tried prisoners, but if the prisoner was very tough, they wouldn't be willing to explain. As long as he was allowed to sleep for three days and three nights, the prisoner would not be able to bear it sooner or later. He would explain everything clearly, and only hoped that he could sleep.

Under the tense rhythm of jungle combat, as tough as Booktonlin, he would only insist on not sleeping for two days and one night. By the next night, he would fall asleep while standing. However, when Booktonlin observed Pang Xiaonan, he not only had no sleepiness, but also could fight monsters, which was really very comparable.

"Captain, do you know that some animals do not need to sleep, or sleep very little, and some can sleep at any time." Pang Xiaonan did not directly tell the secret of sucking spiritual energy to maintain a fullness of energy, but gave an example.

"Are you talking about fish?" Booktonlin turned his head and stared at the fire. The flame seemed to be weaker. "Fish are vertebrates and need to sleep to eliminate nervous system and limb fatigue. However, fish do not have eyelids. They cannot close their eyes when sleeping. Sometimes they sleep in the dark, sometimes they sleep in the sand or secreted bubbles, and sometimes they will sleep while sleeping, in various different positions. We often see fish still in the water, with gills flashing and moving. This is the fish sleeping. If you wake it up, it will swim in the water again."

Pang Xiaonan walked to the fire, added a few large firewood, and returned to his original position. "Not only fish, but also mammals in the water, such as whales. In fact, for many animals, they do not need to sleep continuously for more than 7 hours a day like us humans. The sleep of many animals is fragmented, similar to our nap. Although some animals also sleep continuously, the duration does not last long. For example, horses only need two hours of sleep a day. What's more, some animals can rest alternately with the left and right half of the brain."

Pang Xiaonan moved his neck and made a crackling sound, "For whales, when they sleep, they are similar to humans' holding their breath. When whales sleep, they will float in the middle of the water without breathing at all. We know that whales have very large lung capacity, and not breathing for more than twenty minutes is completely fine for whales. After they take this nap, they will wake up and float to the water to breathe. This characteristic directly determines that whales will not sleep as long as humans, but dozens of minutes of sleep is enough for whales. If it is not enough, just take a deep breath and take a nap."

"What you mean is that you are like a whale. You can take a nap when you have time to replenish your sleep." Booktonlin looked at Pang Xiaonan incredibly, as if he had discovered an alien.

"It's almost the same," Pang Xiaonan smiled, "and I'm very efficient at napping. You know, I can observe the fluctuations of the aura around me while napping." Pang Xiaonan alluded to the experience of being a radar on the boat.
To be continued...