The air here was so humid that we couldn't find water by smell, so we had to make a slight sense of the surroundings and walk towards the lower terrain.

Walking with weights in such heat is nothing short of torture. I thought that after the workout in the previous room, I would be able to relax here after improving my physical fitness, but in fact it was not the case, the high temperature caused my physical strength to lose rapidly, sweat continued to secrete from all pores, wetting all the clothes on my body, I even need to twist my own clothes from time to time to remove sweat, otherwise the sweat-soaked clothes will be heavier, and it will also make me more prone to fatigue.

I watched the other five people, and the other five seemed to be fine, because they didn't know each other yet, so I didn't pay much attention to them. On our side, Lu Haisheng and Lin Ya don't have anything, Fang Ruoxi is a southerner, so his adaptability to this climate is much stronger than mine, Chen Si seems to have no problem for the time being, and what worries me the most is Yu Pu. 、

Yu Pu spoke without an accent, so I didn't know if he was from the south or the north, but it was obvious that his forehead hair had been completely wet, and strands were sticking to his forehead, and his face was getting paler, and I was worried about whether he would be dehydrated and suffer from heat stroke.

And, to my great surprise, Yu Pu is still wearing a jacket in a suit. In fact, I was wearing a coat when I first entered here, but when I felt the temperature here, I took it off and put it away as soon as I saw it. But Yu Pu, he obviously had another shirt in his blazer, but he didn't mean to take off his coat at all.

"Yu Pu?" I finally couldn't help but say, "It's very hot here, take off your blazer and beware of heat stroke." ”

Yu Pu glanced at me, shook his head slightly to signal no, paused for a few seconds, and said another thing, "I'm fine, don't worry about me, but it's around, have you noticed?" ”

"What?" I looked at him quizzically and stopped. The other people around him also heard Yu Pu's words and stopped at the same time.

"Don't you smell anything? And," Yu Pu said, looking up at the sky, "it's a lot darker now than it was just now, and the air pressure seems to be lower." ”

After listening to Yu Pu's words, I shrugged my nose and sniffed carefully, only to realize that there was indeed some strange smell in the air, which was a sour smell.

In fact, this sour taste was also there before, but the original sour taste was still very weak, and now it seems to have worsened a lot. I used to think it was the smell of rotting leaves in the rainforest, but now that I smell it, it doesn't seem to be. It's a very sharp sourness, different from the earthy sour smell of rotting leaves.

"Where does this sour taste come from?" Lin Ya also smelled that smell and frowned and thought.

"It's the smell of nitric acid."

Some unfamiliar voices suddenly sounded, and I followed the sound to find that it was Wen Shiming who spoke.

As if a little uncomfortable because of our gaze, Wen Shiming paused slightly awkwardly before explaining, "The smell in the air is the smell of nitric acid. ”

"Nitric acid? How can there be a smell of nitric acid here? Fu Lingjun frowned, as if he didn't believe it, "Shiming, can you be sure?" ”

Wen Shiming nodded, "I can be sure, it's the smell of nitric acid, I majored in chemistry in college, and this smell won't be misrecognized." ”

"University?" Wang Haobo seemed to sneer with disdain, "How many of today's college students have real talents?" How can there be nitric acid here, I said college students, you're not bluffing us, are you? ”

This Wang Haobo seems to be not only arrogant, but also very annoying.

Wen Shiming was choked by Wang Haobo and seemed to be a little angry, it seemed that she wanted to defend something, but she suddenly changed her attention, just glanced at Wang Haobo coldly, turned her head and ignored Wang Haobo, and continued.

"Believe it or not, but nitric acid is corrosive, breathing this air for a long time can irritate and destroy the mucous membranes of the upper respiratory tract and lungs, coughing and pain, and severe difficulty breathing, unable to breathe and suffocating, when it is really dangerous, don't say I didn't warn you first."

Looking at this Wen Shiming's appearance, it doesn't seem to be out of nowhere, Lu Haisheng and I glanced at each other, and we both felt that it was better to believe it than to believe it.

On the other side, Wen Shiming had already taken off her backpack and was preparing something, thinking that it should be some simple protective measures, and I was about to take a closer look at it when I was studying, but I suddenly felt something fall on my forehead.

I was slightly stunned, raised my hand and wiped it on my forehead, only to find that it was a drop of liquid, and at the same time, the place on my forehead that touched the drop of liquid began to itch slightly.

What is it? Is it raining? I looked up and saw a drop of water in my right eye, and a pain came from my eye.

"Ahh

I couldn't help but scream in pain, and as I lowered my head, I covered my right eye with my hand, and the pain stimulated tears to flow from my eyes. The raindrops are falling more and more, and the places on my body that are drenched in the rain are starting to itch one after another. In a blurred vision, I heard Wen Shiming shouting.

"Quick! Find a place to hide! This is no ordinary rain! It's nitric acid! Come on! ”

Before I could react, I felt something over my head, and then a man grabbed my hand and pulled me forward.

I couldn't open one eye in pain, and the other eye was blurred by tears, so I could only vaguely see that it was Lu Haisheng who was pulling me, and on my head was Lu Haisheng's coat. One hand was pulled, and I could only barely pull the coat covering the rain on top of my head with the other hand, and as for the tears on my face, I had no scruples at all, and my vision was blurred, so I could only stumble and run forward.

We were lucky enough to have a cave after about two or three minutes.

It was only when everyone was in the cave that we breathed a sigh of relief.

The itching sensation on the body is still secondary, and the stinging sensation on the eyes continues, I don't know if it is because of the washing of tears, the pain has eased a little. I am convinced of Wen Shiming's words now, and I still know that nitric acid is corrosive.

"Mo Li? How are you? ”

A familiar voice sounded on the right, and I shook my head wildly, turned my head and looked at my tearful left eye, which was filled with Lu Haisheng's anxious expression.

"My eyes still hurt and I can't open them, so I'm not going to be so blind, right?"

"Do you have common sense!"

Before Lu Haisheng could reply, Wen Shiming's voice came from the other side, and I just turned my head to look, and the hand covering my eyes was pulled down.

"What's the use of you holding it! Rinse with water! ”

Only then did I realize that the person who pulled my hand down was Wen Shiming, and on the other side, Lu Haisheng heard her words, and hurriedly took the water we brought, used his index finger and thumb to help me open my eyelids with one hand, and poured water with the other hand to help me rinse my eyes.

The moment the cold clean water touched my eyes, the stinging pain suddenly increased, and I shook uncontrollably, and then the stinging sensation was replaced by coldness, and the pain was reduced.

"And you! Don't stand stupidly, rinse your body with water, and rinse your clothes with rain! Wen Shiming's voice came, and I squinted at it with my intact left eye, she was guiding others to clean up the aftermath, "It must be rinsed!" You see, the rain outside is not transparent, but pale yellow! This shows that the nitric acid in the rain has a certain concentration, even if it is not as terrifying as the dehydration of sulfuric acid, it will still corrode the skin! ”

I squinted my eyes and just looked at it twice, when a hand grabbed my chin and pulled my head to the right.

"I can't even take care of it, and I'm still watching! Be honest! ”

Listening to Lu Haisheng's words, I was stunned. He didn't move anymore and let him rinse it. It took a few moments before he stopped.

"Okay, how does it feel?"

When I heard Lu Haisheng's words, I tried to blink, although there was still a slight tingling, but it was much better than just now, and I could see it vaguely.

"Much better, thank you."

Lu Haisheng glanced at me, shook his head, and handed me another bottle of water: "You can flush it yourself." ”

"Okay," I reached out and took the bottle of water, hesitated slightly, and said, "You can also take a shower, I still have your coat to cover it, it didn't rain much, you got a lot more than me." ”

"Hmm."

Lu Haisheng agreed softly, took a bottle of water, and rinsed it a little farther away.

Due to the protection of Lu Haisheng's jacket, except for the first point, I really didn't get much rain on my body, only some places under my trouser legs were wet by the rain. I took a closer look at the rain-soaked area and couldn't help but smack my tongue.

The skin touched by the rain is not too painful, the more intense feeling is itching, and it is noticeable that it is yellower than intact skin. The clothes that had been drenched had corroded into tiny holes, and I think I knew what was going on with the uneven wax on the leaves.

At this time, everyone had finished washing, and each found a place to sit down, and invariably looked at the pale yellow rain curtain outside.

"Find some damp cloth to dip in water and plug your mouth and nose, I don't know how long it will rain again."

This time, no one questioned Wen Shiming's words, even Wang Haobo just did it quietly.

I took the wet cloth that Lu Haisheng handed me and covered my mouth and nose - it was the torn cloth of my coat, thought for a while, looked in the direction of Wen Shiming, and thanked him, "Wen Shiming, thank you for what happened just now." ”

She was stunned, as if she hadn't expected me to thank you, and after a few seconds she shook her head and turned her gaze back to the outside of the cave.

For a while, no one spoke, only the sound of rain kept coming from outside.

Hopefully this rain won't last long

I looked at the pale yellow rain and was worried.