It's night when the temperature is getting cooler again.

The temperature difference between day and night is so large that Zhou Shuangshuang has only heard of deserts......

Although after a day's work, she is familiar with everyone. But at night, she still didn't want to go into the cave with the others, so she had to sit back in the shed of the sick number.

She sat quietly in front of the fire and rubbed her arms.

Beside him, several of the wounded were already recovering. This kind of physical fitness, I really envy it......

However, in the evening, Zhou Shuangshuang was not at ease, so she still gave them anti-inflammatory drugs.

Even if the wound heals quickly, she can't take it lightly!

…………………………

It's cold.

Zhou Shuangshuang took the printed stack of crop planting methods and pondered carefully, and at the same time, she couldn't help but add firewood to the fire twice.

Actually, the clothes she wore were already quite thick. After all, in reality, the temperature has slowly dropped over time.

November weather, it's time for a coat.

But now, the night here is still very cold!

It is also thanks to the fact that there is a tight grass hut piled up by branches and leaves, otherwise if you don't go into the cave, you won't be able to withstand the freezing weather outside.

……………………

Today, everyone obeyed Zhou Shuangshuang's command, although they did a lot of inexplicable work, but they also ate food that they had never tasted in their lives, and they were feeling unprecedented satisfaction at the moment.

This sense of satisfaction and curiosity led to the fact that in the afternoon, someone began to take the initiative to learn what she had to say.

Zhou Shuangshuang: Great! If you study unilaterally on your own, it's too slow.

……………

Small fires burned in all directions, and the originally dark caves in the distance were now dancing with a faint orange-red fluorescence.

There were even people sitting near the fire near the entrance of the cave.

They held crude bone or stone needles in their hands, tied slender bark to the ends, and were holding them at the moment, sewing the tough leaves together.

After all, when hunting, it is difficult for them to guarantee that they will be able to bring back their fur intact.

Now, with this method, there will be no air leakage between the grass leaves, but it is more convenient than a leather skirt. I'm afraid that in two days, their little leather skirts will all turn into grass leaf skirts.

At this moment, people snuggled up to each other in front of the fire, feeling the scorching warmth, and their hearts were full of respect for Zhou Shuangshuang.

After all, they didn't dare to burn the fire before, but that doesn't mean that everyone is not afraid of the cold.

Moreover, now that there is a fire, it is more comfortable for everyone to drive at night.

- This is also the reason why Zhou Shuangshuang has refused to enter the cave so far.

After all, no matter how unscrupulous and unrestrained their nature is, but when the temperature drops at night, they will still choose to be in the cave when driving.

……………………………………

And at this moment, Zhou Shuangshuang, who had already taught the only method of drilling wood for fire, was very heartbroken to discover: this is the oldest and most basic method of making fire, they can actually see it!

Moreover, Qi, as the leader and patriarch, succeeded for the first time.

Weekly Frost: ......

- Oh my God!

She wailed silently, and couldn't help but reflect on herself again, is she really stupid?

Obviously, she has been admitted to Yuewei University.

In Star Ring City before, it was just that the IQ was crushed, and it could be said to be the pot of the processor.

But now that I'm back in the primeval jungle, I can still be crushed like this-

Zhou Shuangshuang touched her head and said in her heart: Didn't you work too hard some time ago, and your brains were all boiled dry?

…………………………

In fact, this is the tip of Zhou Shuangshuang's horns.

In such a cruel environment as the primeval jungle, not only can An An grow up to be in his 20s now, but he can even become the leader of the group, and his learning ability should not be underestimated.

The reason why it seems clumsy is simply because of less knowledge. If he were to be placed in the 21st century, where information is developed, I believe he could have done more than 80% of the world's people.

……………………

…………………………

The night was getting deeper, and everyone slept more and more.

Zhou Shuangshuang moved the fire aside, and lay down on layers of leaves and clothes in the original residual heat area.

Now, she has slept for many days, and she can still get used to it.

Thinking about the clothes in the third year of high school, reaching out for food and opening his mouth, and even the mattress and pillows, Zhou Shiwen deliberately changed to the most comfortable one......

Alas!

Zhou Shuangshuang sighed: It's not very difficult to go from luxury to frugality......

With such an inexplicable complacent thought, Zhou Shuangshuang fell asleep.

In the distance, the mountains are clear, and the shadows are overlapping. And overhead, there is a brilliant galaxy......

It's late at night.

…………………………

In a daze, Zhou Shuangshuang suddenly shivered and slowly woke up.

The fire beside him was clearly extinguished, the orange flames were blown to the ground, and the outermost two piles had been extinguished at some point.

Before she had time to think about it, she walked over with her eyes agased and tested the temperature of the extinguishing pile with her hand—it was cold, without a trace of heat.

How could it be destroyed?

Zhou Shuangshuang looked at the stout branches that had not yet been burned, and muttered in her heart. Two more burning firewoods were moved from the side.

The sick number sleeping beside him was nothing abnormal at the moment, and he was still sleeping peacefully.

It's a little chilly.

She rubbed her hands and said in her heart: Isn't it cooling?

After thinking about it, she got out of the hut through the crack in the branch door and picked up the cold and hard leaves.

However, in the next second, a cold wind blew, so cold that she didn't even have time to sneeze, and she directly retracted back into the shack.

It wasn't until standing by the fire that Zhou Shuangshuang's stiff feeling slowly disappeared.

She was surprised: ...... outside How can it be so cold?!

You know, in the first few nights, she didn't go out in the middle of the night. But at that time, although frost flowers would form on the blades of grass, the temperature was still within an acceptable range. But why did it suddenly cool down tonight, and the drop was so large?

She took out an air thermometer and hung it quietly on a branch next to her, and when she looked at it again after a while, she found that the temperature had dropped to minus 20 degrees!

-20 degrees below zero?!

- Oh my God!

Zhou Shuangshuang sighed silently - you know, the branch she hung on this side is still in the house! It's just against the crack in the door.

This is why now, her physical fitness is not ordinary, otherwise......

Zhou Shuangshuang shook her head, not daring to think about it anymore.

…………

So, it's minus 20 degrees here, and what about outside......

Another cold wind blew through the gaps in the leaves, and even the heat of the fire in the house could not stop the biting cold.

Zhou Shuangshuang trembled, and a term came to her mind-

Ice age.

…………………………