Chi chi chi——
Huo Yu holds a can of spray in his hand and writes a mark with fluorescent paint next to the middle cave passage.
This kind of spray is specially used for marking. It is waterproof and dustproof, and it will not fade for ten days and a half.
After spraying the mark, Huo Yu led Bai Xiaomo and Ling Ran decisively into the middle passage.
As the three of them went deeper, the cave became narrower and narrower.
The only light source in the dark cave was a flashlight, which gave people an indescribable sense of depression, and the atmosphere became eerie and strange.
Ling Ran, who was walking behind, felt a chill on his back, as if someone was silently spying on him in the dark.
This feeling was not unfamiliar to him. He had been to the underground morgue several times in the hospital before, and it felt very similar to this feeling now.
He bit the tip of his tongue, forcing himself to calm down, and then he was ready to say something to break the silent and weird atmosphere.
"I said……"
Just as Ling Ran spoke, he suddenly heard the sound of wings flapping beside him, followed by a strange bird call:
"Gu Gu Gu Gu! (What are you doing, you're scaring this baby!)"
Ling Ran was so frightened that he staggered, turned his head suddenly, and saw a white shadow flash past him, and then hit the ground directly!
Ling Ran:d(ŐдŐ๑)
Little Snowy Owl:(๑ŐдŐ)b
One man and one owl, two cowards with little courage, frightened each other to death at the same time.
The little snowy owl struggled to get up from the ground, quickly flew back to Huo Yu's shoulder, pointed its wings at Ling Ran and began to complain:
"Gu Gu Gu Gu! (That perverted uncle scared me to death!)"
Huo Yu rubbed the little snowy owl's cheesecake-like head helplessly: "Why are you flying behind when you have nothing to do?"
Hearing this, the little snowy owl responded shyly:
"Gu Gu Gu~ (I'm pulling daddy~)"
Although the Little Snowy Owl is a girl, she is also a straight-headed bird, so she can't drag her daddy onto Huoyu's shoulders.
Huo Yu had nothing to do with the little snowy owl, so he turned back to look at Ling Ran, who was holding his heart and looking panicked:
"Old Ling, can you do it? I've never heard of a pervert who scared a little bird like this."
Ling Ran said with lingering fear: "I thought it was a bat. There are so many bacteria and viruses on that thing. I'm most afraid of that thing."
"Gu Gu Gu Gu! (You are the bat, how can a bat be as cute as me!)"
Ling Ran knew that he was in the wrong and that a living person could not see as well as a little bird, so he smiled sheepishly at the little snowy owl.
"Xiao Mo, you can cut off the queen." Huo Yu said to Bai Xiaomo on the side, "It's the first time for Lao Ling to be in this kind of environment. It's normal for him to be a little nervous."
Bai Xiaomo took Ling Ran's place, and the three of them continued walking deeper into the cave.
After walking for about ten minutes, there were no more forks in the road, and the road became much wider.
Although everything went smoothly, Huo Yu became increasingly wary.
There is no other reason than that this cave is a bit too long.
I've been walking for almost half an hour, and I haven't reached the exit yet. The cross-section width of this mountain is not that big.
Just when Huo Yu was about to stop and make plans, Ling Ran stumbled next to him and almost fell to the ground.
Huo Yu quickly helped him up and asked helplessly: "Old Ling, what scared you again? How come you are less courageous than a mouse?"
Ling Ran leaned against Huo Yu and said with some difficulty: "Stationmaster, something's not right. I'm a little dizzy."
Huo Yu's expression changed drastically when he heard this, and he quickly stopped.
Being dizzy in a cave is not a good thing and may be a sign of gas poisoning.
"Stop moving forward, take a rest, and Xiaoyu will be on guard."
The little wolf cub who had been walking beside Huo Yu responded, and his body expanded and became a majestic wolf. He stood in a wide position in the cave and began to guard everyone.
Huo Yu and Bai Xiaomo helped Ling Ran to the side of the stone wall.
He lowered his head to look at Ling Ran again, only to feel that he was very lazy at this time, and he seemed to be dizzy. His eyelids kept chattering, as if he was drunk.
"Old Ling, wake up." Bai Xiaomo pushed Ling Ran, "You are a doctor, you can see what's going on for yourself."
Huo Yu also felt dumbfounded. Ling Ran was a doctor himself, but he was the one who had the problem.
"It should be Oxygen." Ling Ran replied weakly, "Tiredness, weakness, lethargy, chest tightness, dizziness, the symptoms are all consistent."
Oxygen poisoning is actually 'oxygen poisoning'. Like altitude sickness, oxygen poisoning is not a disease, but a normal physiological reaction of the human body.
This situation mostly occurs in people who have just adapted to the low-oxygen environment in plateau areas and then re-enter areas with relatively high oxygen content.
"How is this possible?" Huo Yu frowned and analyzed, "The oxygen content in the cave should be lower than outside. How could there be oxygen poisoning?"
Ling Ran shook his head feebly, saying that he didn't know either.
Oxygen is an indispensable substance for human beings to maintain life, but inhaling oxygen beyond a certain pressure and time will have harmful effects on the human body.
In this situation, it was difficult for Ling Ran to maintain his consciousness, let alone think.
"Then what should we do?" Bai Xiaomo looked worried, "Let's just block one of your nostrils and take in less oxygen. Is it better?"
After saying that, Bai Xiaomo stretched out a finger eagerly.
As soon as he said this, Huo Yu looked at Bai Xiaomo like a fool.
Do you want to see what you are talking about?
"Vitamin E, do you have it?" Ling Ran managed to spit out a few words.
Huo Yu's eyes lit up and he quickly rummaged through his space backpack: "There are some."
Bai Xiaomo on the side wanted to say, "Check," but seeing the weak Ling Ran on the side, he felt that it seemed impolite, so he endured it.
Huo Yu quickly found a bottle of vitamin E, took out two pills, and put them into Ling Ran's mouth.
Vitamin E, also known as tocopherol or pregnizanthenol, is one of the most important antioxidants. It has a strong antioxidant effect and is beneficial to the prevention and treatment of 'oxygen drunkenness'.
Ling Ran took the vitamin E and continued: "This stuff is mainly for prevention. It's best for you to take two pills, but for people who have already developed symptoms, it's better to treat the symptoms rather than the root cause."
Huo Yu quickly asked: "How can we cure the root cause?"
"Most cases do not require treatment and can be relieved by taking more rest." Ling Ran paused and then said, "However, the treatment effect is better with a hyperbaric oxygen chamber, or by inhaling some low-concentration oxygen."
"Yes, yes!"
Huo Yu's eyes lit up and he started rummaging through the space backpack again.
Bai Xiaomo and Ling Ran looked at each other in astonishment, with a few words of complaint in their hearts.
"Are you a Taoist Duobao?"
Huo Yu said sternly: "I'm not some Taoist priest, I'm the most powerful robot in the universe - Doraemon."
