Han Cheng frowned for a while, then slowly relaxed his brows.

Generally speaking, even if the climate turns cold, there will be no sudden changes.

A gradual transition will give people enough time to cope with the situation.

According to the current situation of the Qingque tribe, as long as the winter does not become too long and the food obtained from farming accounts for an increasingly large proportion of the total food, the Qingque tribe is not afraid of such changes.

It's just that we spend more time indoors in the winter.

Even if it is really too cold and we can't live here, the worst that can happen is that we can take people and migrate south, all the way south. I don't believe that the subtropics or even the tropics can become so cold.

Today's Qingque tribe is neither big nor small, and they have really made up their minds to migrate. It is a bit troublesome, but nothing can stop them.

Of course, this is just the worst-case scenario. The tribe has only had calendars for a short time, and the years recorded on stone are not many. It is not too accurate to conclude that the weather is getting colder based on the data from just the past few years.

Maybe this is just a normal phenomenon.

Thinking of this, Han Cheng felt relieved immediately.

He told Shi Tou his thoughts, patted him on the shoulder, and told him not to worry too much, as it would not happen that the area was covered with ice and snow all year round.

There was plenty of food in the tribe and kangs in the rooms, so it was easy to survive the cold weather.

After hearing what Han Cheng said, Shitou felt relieved. What he was most worried about was that as the number of cold days gradually increased, the whole year would be covered in ice.

In this case, they cannot grow crops, and without grass and trees, the prey cannot survive, and they will have no way to survive.

This kind of thing would not happen if the ground was covered in ice all year round. Even in the Arctic Circle, the ice and snow would melt and some grass would grow at a certain time every year, not to mention where Han Cheng and his friends were living now.

Han Cheng gave great affirmation to Shitou's ability to think and discover problems.

This is indeed worthy of encouragement. It is really rare for people of this era to be able to discover this situation and think about the possible consequences, although it may be a bit too serious.

Shitou walked away carrying the pottery slabs one by one. Han Cheng stood here with a thoughtful look on his face. If the climate really gets colder and colder, how should he deal with it in the future?

Migrating with the tribe is the last resort. Unless it is forced to that point, Han Cheng, like most tribes of this era, will not take this step.

After all, after several years of operation, there have been many gratifying changes around the Qingque tribe.

Not to mention the copper mines and salt mines, just these thousands of acres of land would be enough to give people a headache if they had to move to a new place to live.

Reclaiming wasteland and cultivating the land is not an easy task. There are tree roots and grass roots in the land. The newly opened land often takes two or three years to gradually become fertile land. The sweat beads fall to the ground and break into eight petals. Needless to say, the hard work involved is enormous.

The greatest characteristic of the agricultural age is that people are attached to their land. It is not that people do not want to travel to other places, but that they are tied to the greatest wealth, the land.

After a while of thought, Han Cheng sighed. Faced with such a change in the environment, he really didn't have many solutions. All he could do was to let the people in the tribe cultivate more land, grow more food, and store more food to cope with the impact of the cooling climate.

As long as there is enough food, everything else will be easy.

After figuring things out and deciding on a strategy, Han Cheng went to find Heiwa.

After searching for a while without finding it, he later heard someone say it was inside a cave, so Han Cheng walked towards the cave.

A fire was lit inside the cave of the Qingque tribe. Around the fire, there was a half circle of pottery molds, some large and some small.

Heiwa was holding the frozen clay not far away, his fingers moving constantly. After a while, he would take another object and press some on the clay, then pick up the bamboo knife, rest for a while, and work very seriously.

What Heiwa is doing now is the model of the plowshare that has troubled him for a long time.

After a long period of thinking, experimenting, thinking and testing again, he finally found a way to solve this problem.

Fortunately, the problem of the plow mold was figured out before the snow completely melted, otherwise the spring plowing in the tribe would have been delayed.

Heiwa was very happy thinking this, not only because he had made the mold for the plowshare before the spring plowing, but also because this idea was his own.

Through his unremitting efforts, he overcame the troublesome difficulties. The refreshing feeling he felt at the moment of overcoming the difficulties fascinated Heiwa.

Even hugging Zhuang and humming a little tune together is not as refreshing as this feeling.

Moreover, what he solved this time was not just the plowshare. With the plowshare model, he could make more tool models by promoting it to other areas.

As long as he is given more time, he can make things like copper basins and copper bottles.

At this moment, Heiwa was like a person who had overcome all obstacles and saw a smooth road ahead, his heart full of enthusiasm.

Driven by the desire to make the plowshare mold as soon as possible so as not to delay spring ploughing and to tinker with other tools, Heiwa is now extremely enthusiastic about making the mold.

Now that the weather was only slightly warm, he couldn't wait to get started.

The reason why they chose to do these things in the cave is, firstly, because the cave is more spacious than the room and they can move freely; secondly, compared with the outside, there is less wind inside and the temperature is higher, so the kneaded clay is not easy to freeze.

Make a mold in your hand, place it carefully next to the fire, and evaporate the moisture inside by roasting it.

After doing this, turn over those originally placed around the fire and continue roasting them.

Several of the first ones had been completely dried, so Heiwa put them into the fire and burned them directly.

Through previous bronze casting, Heiwa discovered that the mold did not need to be fired very well and did not need to be put into the kiln. It only needed to be fired in the fire for half a day and then taken out and used. The effect was no worse than that of fired pottery.

After doing all this, Heiwa squatted beside the fire, stretched out his hands and used the fire to warm his frozen palms.

The weather has just warmed up at this time, and it is not a good season to play in the mud. The cold mud is extremely freezing to the touch.

"How's it going?"

Han Cheng, who had been standing not far away and watching for a while, smiled and spoke. Hei Wa, who was immersed in his own world, was frightened and trembled...