The crowd was unconvinced. They didn't believe that the snowflakes falling from the sky could contain any harmful substances. After all, there was an old saying that snow was used to purify the air, and that the weather would definitely be much better after a heavy snowfall.
As for toxic substances, there aren't that many toxic substances in the sky! They'd probably all been washed away by the heavy rain long ago.
Seeing that no one believed him, Lu Yuan didn't intend to say anything. He simply followed Han Wen and the others into the warehouse to move things.
They arrived at an open space with the equipment, and several people operated the instruments to launch the drone into the sky.
Since satellites were mostly out of service at this time, drones had no rules and flew randomly in the sky without encountering restricted areas. However, a major problem was that it was dark and visibility was poor. Without gyroscopes, drones were very prone to crashing.
Fortunately, the person operating the drone was an experienced operator. He precisely controlled the drone to fly upwards, and after a series of maneuvers, the drone landed steadily on the ground. Underneath the balloon on the back of the drone were air samples collected from the sky.
"We'll know once it's tested!"
Lu Yuan, holding the balloon, entered the laboratory. Due to the lack of oil and electricity, the generators in the laboratory and warehouse were basically not turned on, unless there was something particularly important to do.
After a series of tests, the results finally came out, and everyone was stunned when they saw the report.
"What? Such a high content of lead and mercury? This...this can't be right? Aren't lead and mercury quite heavy?"
Mr. Lu said with a look of shock, "But the air doesn't look as polluted as I imagined!"
Han Wen, who was operating the experimental table nearby, chimed in, "Uncle, what's in the air isn't clouds anymore, it's aerosols. They're clearer than air, but much more turbid! I think Lu Yuan is right! It's very likely that these aerosols will react when they come into contact with snow! After all, the temperature is higher at high altitudes, and lead and mercury are volatile substances that can easily form new compounds in the air!"
The crowd stared at Hao Hanwen, completely bewildered by what she was saying. They knew nothing about aerosols or compounds like lead and mercury; all they knew was whether these things were harmful to the body.
Lu Yuan sighed, then returned to the breeding area and produced a white mouse.
"Let's test the danger!"
So the experimenter put the mice into a transparent glass box and then injected the aerosol collected from the balloon into the glass box.
At first, the mouse didn't react at all and continued to lie on the ground looking for food. But after a while, the mouse started to become a little alert.
It raised its little head and looked around, its body trembling slightly, as if it had seen something terrifying, and huddled at the edge of the glass box.
As time went on, just half an hour later, the mouse's eyes turned bloodshot, and it began frantically tearing at the glass in the box. This frenzied behavior shocked everyone.
Then, another half hour passed. The mouse had exhausted all its energy, but its four paws were still moving frantically, only much less forcefully, and a piece of its tooth had been broken.
Finally, the white mouse lay motionless in the glass box, a trickle of blood seeping from the corner of its mouth; it was dead.
"So? Is the danger here very serious?"
Lu Yuan broke the silence in the room, saying, "So, this snow will definitely pose a certain threat. Although we don't know if it will have any impact, we still need to be careful!"
Xiao Shan's mother rubbed her hands together, still shaken. "It seems Xiao Yuan was right. We'd better hurry and get some water! Otherwise, the journey will be even more difficult when the blizzard comes!"
Lu Yuan gently patted his mother's shoulder and said, "Mom, you don't need to worry about this! Just wait for us to come back! Just prepare the meal when we get back!"
Lu's mother rolled her eyes at Lu Yuan: "All you ever think about is food! I'll go prepare some food for your journey right now! By the way, how much do you need?"
"Too much is no good, and too little is not enough!"
Lu Yuan rubbed his chin and pondered for a moment: "Just bring half a month's worth! We'll eat sparingly on the road, it should be enough! And at such a low temperature, the food won't spoil, it can be stored for several months without any problem!"
"You little brat, I'll give you two weeks at most! Come back when you're done!"
When Lu Yuan mentioned storing the ice for several months, his mother became anxious: "If you encounter any danger on the way, come back immediately! We'll think of other solutions then; we don't necessarily have to go to the glacier to collect ice! Do you understand?"
Lu Yuan nodded. Seeing this scene, Xi Wen and the others felt a little envious. It had been a long time since they had spoken to their families like this. Perhaps they were no longer around?
That evening, Lu's mother, Xiaoshan's mother, Grandma, and Xiaoshan all busied themselves in the kitchen.
"It's so cold, we need to prepare more high-calorie food for them. I think beef is good, let's bring them more beef." As Xiaoshan spoke, she placed more than 20 kilograms of beef on the cutting board, preparing to cut it into pieces.
"Yes, meat alone isn't enough. We also need to prepare more vegetables for them to supplement their vitamins. Otherwise, their bodies will be nutritionally unbalanced, and they might have problems in this extremely low temperature."
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