pertwk Chapter 48 I am the underwater dragon
Chapter 48 I am the underwater dragon
Du'an.
A city with a beautiful natural environment.
A Mercedes-Benz G-Class was slowly driving on the road. The young man in the driver's seat had one hand on the steering wheel and the other hand on the window.
He stopped the car only when the words "White Shark Diving International Club" came into view.
three days ago.
Xu An flew to Guidu, bought this G-Class, and drove slowly all the way to Du'an.
Xu An glanced at his current identity.
[Current Identity: Cave Diving Expert]
[Exclusive Talents: Sharp Eyes, Nitrogen Intoxication Immunity]
[Identity Declaration: There is no underwater cave in this world that can take my life. I am the underwater dragon, the god of the cave-diving world!]
[Mission: Explore ten of the world's most famous underwater caves, break world records, and explore an unknown underwater cave]
Current progress: 0%
[Task Reward: 100 million cash, musical instrument proficiency]
Underwater oxygen supply is now in use.
That's right.
After completing the "Novelist" mission, this became Xu An's new identity: a master of deep-dive techniques.
Let me explain what "diving in a cave" means in a simple way.
Cave diving, also known as cave diving, is a type of technical diving and is considered an extreme sport. Simply put, it involves diving in underground caves, underground rivers, or blue holes that are completely filled with water.
Cave diving and regular diving are two completely different concepts.
Regular divers can surface for oxygen at any time.
Cave diving, on the other hand, involves entering a water-filled cave surrounded by rocks. It's a closed passage where you can't easily surface; the only way out is to return the way you came, like navigating a maze.
Cave diving is like risking your life in an underwater maze. It is one of the extreme sports with the highest mortality rate in the world, and also one of the extreme sports with the most desperate ways to die.
Why is it one of the most dangerous and desperate extreme sports?
First, the underwater cave is completely enclosed, with no way to escape. If you take the wrong path or lose the guide rope, you will most likely die.
Secondly, because some caves remain unchanged for many years, a lot of mud and sand accumulate at the bottom. If you panic and make a sudden movement, or accidentally kick up the mud and sand, your vision will instantly become pitch black, and you will lose your way.
Thirdly, the depth and water pressure are significant. If one dives to a certain depth, the atmospheric pressure will increase, potentially causing internal organ damage to ordinary people. Therefore, once the cave reaches a certain depth, people will stay underwater to decompress and prevent decompression sickness.
Fourthly, and most fatally, is nitrogen narcotics, known as the underwater killer.
Cave divers typically wear compressed air cylinders, not oxygen cylinders.
At a distance of more than 30 meters, pure oxygen cylinders can cause oxygen poisoning, leading to convulsions, coma, and even drowning. Furthermore, prolonged inhalation of pure oxygen at atmospheric pressure can damage the lungs and central nervous system.
Therefore, cave divers almost always carry compressed air bottles, which contain a mixture of nitrogen and oxygen, with a nitrogen-to-oxygen ratio of 79% to 21%.
What is nitrogen narcosis? It means that the deeper the water and the greater the pressure, the more nitrogen gas is dissolved in the blood, which can cause a feeling of being drunk. So it is called nitrogen narcosis, or deep-sea drunkenness.
Once narcotic narcotics occurs, reactions become sluggish and slowed down, the mind becomes unsteady, and one may suddenly become reckless and take unnecessary risks, which is often the most dangerous time.
Secondly, they lose their judgment and cannot distinguish directions. In severe cases, they may laugh foolishly, become mentally confused, have blurred consciousness, or even experience hallucinations.
Imagine a drunk person who can't even walk steadily on a main road, let alone be in an underwater cave dozens of meters deep where there is no light at all.
This is why nitrogen narcotics is known as an underwater killer.
Closer to home.
The city that Xu An came to is known as a holy site for cave diving in China.
There is a world-famous underwater cave system here called Nine Skylights.
It is also known as the underwater Mount Everest.
"Handsome, what can I do for you?"
The receptionist was a young girl. Her eyes lit up when she saw Xu An walk in.
So handsome!
"I'll look for Old Cat; I've been in contact with him online," Xu An replied.
"Looking for our boss? Sorry, he's not here. He's in the training area leading a group of trainees right now," the girl said with a smile.
"Training area? Nine-ton skylight?" Xu An asked.
"Yes, if you're not in a hurry, you can sit here for a while and wait for our boss to come back," the girl said.
"It's alright, it's alright, I won't sit down. I'll just go check out the Nine-Bun Skylight anyway," Xu An said with a smile, then turned and left.
The girl watched Xu An get into a Mercedes-Benz G-Class, biting her lip, her eyes shining. "He's not only so handsome, but also so rich. I wonder if this handsome guy has a girlfriend..."
Jiudun Sky Window, a holy site for cave diving in China and the capital of cave diving, is also known as the world's sky window.
With its well-developed underground water system and unique underwater karst landforms, it attracts a large number of tourists every year.
The entire Jiuduntianchuang (Nine Skylights) has two entrances, one in the north and one in the south, which converge at a depth of 110 meters underwater. Continuing downwards, it forms a narrow vertical shaft, which widens slightly after 215 meters. Overall, it is a sloping shaft-type karst underground river system.
The current known maximum depth is 277.4 meters, which is an Asian record. The person who set this record is none other than Old Cat, the owner of the White Shark Diving International Club.
The estimated true depth of the Nine-Bend Skylight is greater than 300 meters. Since it has not been fully explored, no one knows its exact depth or what lies deeper underwater.
It is summer.
At Jiudun Skylight, many tourists were playing in the water, some paddling in kayaks, and others freediving.
To put it simply, scuba diving involves wearing compressed air tanks.
Freediving is all about relying on a single breath.
Xu An stood to the side, gazing at the tranquil pool. From the surface alone, no one could tell that there was a hidden world beneath.
After looking around for a while, Xu An's gaze settled on a particular area.
There were several fully equipped scuba divers in that area, carrying air compressor tanks.
That should be the training area of the White Shark Diving Club.
Xu An walked over there...
"You must stay calm underwater and always remember to breathe through your mouth. If your diving mask gets water in, like I did, you can use this method to get the water out..." A man was explaining the key points of diving to the three people in front of him.
"Okay, now let's dive down and try it out. Remember the hand signals I just taught you. This time we'll stay underwater for a while to let you get used to it. Unless there's something really important, we won't come up until the time is up."
As the man spoke, he gestured for everyone to descend.
Three fully armed men, whose genders were indistinguishable, plunged into the water.
The man followed suit and crawled down.
Xu An walked to the training area and saw a man who looked like a coach giving instructions.
"Hello, is this the training area of the White Shark Diving Club?"
The coach turned to look at him. "Yes, you are...?"
"I'm here to see Old Cat," Xu An replied.
"Looking for Old Cat?" The man turned his head and looked around, but didn't see Old Cat. "He probably took his students down the shore. You can wait on the shore for a while."