Yang Xiao personally took Gong Yu, Huang Wen, Qin Yu and others out of the building and came to walk around the city of Shashi.

Everyone walked along Wuyi Road, the main road of Shashi, and everyone felt that the snow under their feet had loosened, and they went down a pit under their feet.

After a year of freezing snow, the snow has hardened, but now the snow on the surface has loosened when you go down.

Everyone's hearts began to get excited.

"Boss, is spring really coming?"

"I'm counting on spring to come, and I'm really tempted to wear a dress." Qin Yu said with a smile.

"You can wear it now, I don't see if I freeze you." Deng Xiao stretched out his hand and poked Qin Yu.

......

Everyone talked and laughed all the way, walked for more than half an hour, and came to the Xianghe Bridge.

On the iron railings on both sides of the bridge, Yang Xiao touched the snow on it with his hands, it was indeed a little wet, although it had not completely turned into water, but this change was already obvious.

When the iron railings are exposed to sunlight, the temperature rises quickly, and the snow on them melts easily.

In the past, because the temperature of the whole earth was very low, the iron railings were exposed to sunlight, but the snow on them never melted.

"Now it seems that the temperature of the whole earth has risen, and the sun in this sky seems to be stronger than before."

Yang Xiao looked at the sun in the sky, and then stood on the bridge and looked into the distance.

The world in front of me is still white.

The Xiang River has basically been dug all over, and there are icefish left everywhere on the ice on the surface of the river, and these fish are really too much to eat.

Gong Yu suddenly said:

"If the snow melts, we may have a temporary phase of food shortages."

Yang Xiao was stunned for a moment and asked:

"Why?"

"Think about it, what is the main food we have right now? It's the ice fish, and some of the food stored before the end of the world, but after a year or so, the food is basically running out. ”

"But we still have mountains of ice fish now, and there are so many ice fish in Xingyue Lake that we can't eat them for a few years." Huang Wen said.

"It does seem like a lot now, but once the snow melts, you will find that overnight, there are fewer of these ice fish."

Gong Yu said with a smile.

Yang Xiao was stunned for a moment, patted Gong Yu's shoulder, and said:

"Sure enough, he is a top student at Modu University of Finance and Economics, and his thinking is ahead of his time."

Huang Wen, Qin Yu and the others didn't understand yet, and looked at Yang Xiao.

"Think about it, what is the reason why the current icefish can be preserved and will not rot?"

"Now that the weather is so cold, there is ice and snow everywhere, and the earth is like a big refrigerator, which is naturally easy to preserve, is it strange to you?"

"But once the weather gets warmer, the earth warms up, and the snow melts, these icefish quickly rot and become inedible within a few days."

Gong Yu said with a smile.

When everyone heard this, they immediately woke up.

"What then?"

"It's been a cold winter for a year, there is a lot of snow on the earth, and it can't melt in a day, and now the cold temperature can last for about a month or two, and this month or two is the time left for us.

I remember watching a documentary about the life of the people of Iceland before the end of the world, where they would hang fish caught in the sea directly outside and dry them in cold air so that the food could be preserved for a long time. ”

Yang Xiao said as he continued to walk forward, and after crossing the bridge, it was Jinwan Town, and after passing Jinwan Town, he entered Xiannan University.

Yang Xiao hasn't been to Xia Nan University for a long time, and now there are less than 200 people stationed at Xia Nan University, all of whom are ordinary genetic evolutionaries.

Yang Xiao chatted with the people stationed here, and they said that about ten days ago, the snow on the ground showed signs of loosening, but no one took this situation seriously.

Through the teleportation array, Yang Xiao came to Shonan University, where there were still 800 people living in the caves, some of whom were old people from the past, and some of whom were transferred from nearby Star City.

The floor heating and air conditioning in Star City have long been stopped due to the lack of diesel power generation, but this cave at Shonan University is very good, surrounded by mountains and forests, and there is a lot of wood that can be cut down for heating, so some people come to live here.

When everyone returned to their alma mater, they were very emotional, Huang Wen, Qin Yu, Deng Xiao and others also went to skate on the playground, but because the snow on the surface began to loosen, the feeling of skating was not as smooth as before.

When he returned, Yang Xiao came to Xiannan University and went directly to Xianghe through the path of Xiannan University.

The ice in the Xianghe River has been turned up, and there are potholes everywhere, and the ice here does not change particularly obviously.

Gong Yu on the side said:

"Ice is different from snow, ice reflects the sun's rays, and absorbs less heat, plus the entire riverbed is ice, the volume is larger, and there is no change for the time being, but the snow on land is different, especially those that are attached to buildings, because buildings are easy to absorb the sun's heat, and then conducts it to the snow above, and melts faster."

Yang Xiao smiled:

"You're really a top student."

Gong Yu said: "This is all junior high school physics knowledge, okay?" ”

Yang Xiao could only be speechless.

Two days later, Xia Luo and the others gathered together and reported what they had seen, it was true that the snow in various places had begun to show signs of loosening, and some places had even begun to melt, but the ice in the entire Xingyue Lake had not changed for the time being.

杨昊 says:

"Based on the situation of these two days, we can temporarily conclude a basic fact, that is, the temperature of the earth is slowly rising, although the night is still cold, and the day is also very cold, however, there are signs of thawing, once the snow melts, we will encounter some new conditions,

After the temperature rises, the icefish become perishable and cannot be preserved, once the icefish is lost as the main food source, more than 40,000 people in the two cities will face starvation, so, from now on, except for the people who dig the icefish, the rest of the people must all mobilize, and all the icefish that were previously piled up in the river and Xingyue Lake must be transported to the shore, the fish belly will be broken, the internal organs will be dug out, and then hung up to dry and dry.

This work is very important, related to our food safety in the future, after everyone goes back, we must mobilize all people to pay attention to this matter, as well as those stored food, once the weather warms up, many places will become humid, pay attention to moisture. ”

"A large amount of snow melts, the ice water in the upper reaches slowly flows down, and when it accumulates to us, there will definitely be floods, our Shashi is in the middle and lower reaches of the Xiang River, fortunately, our current population is relatively small, so everyone should pay attention to finding a safe place to live during this time, and before the flood comes, everyone will move in to temporarily avoid the flood,"

"Once the flood is flooded, it is estimated that it will take at least a month or so based on the current situation, and in this month or so, will my food safety be guaranteed?"