The source power of the Heavenly Dao can only be restored in a hundred years, and it is very precious.

This thing cannot be wasted on meaningless things, but can only be used at key points or to deal with disasters.

In the setting of Cao Tian’s novel "The World of Heaven and Heaven" written by him, there are disasters in the world.

It is generally divided into three types: the catastrophe of life, the catastrophe of heaven and earth, and the countless catastrophe of era.

The disasters of living beings, the disasters encountered by wise living beings, such as the human race encountered wolves before and suffered a crisis of destruction.

If you cannot pass it over, the least you will die in a large number of creatures, and the worst you will all be extinct.

The great disaster of heaven and earth is a more advanced disaster. It can not only harm wise creatures, but also harm all things in the world, and even the entire world.

If you can't get over it, the least you will be withered, and the worst you will be severely damaged and your lifespan will be greatly damaged.

The infinite tribulations of the era are the disasters that the world needs to go through when it is promoted to a higher position, and it is also the most terrifying of the three disasters.

If you cannot pass it over, the world will be damaged and civilization will regress. You must start to develop again, accumulate experience value, and get through the tribulation and advance again. In the worst case, the whole world will be destroyed or even directly destroyed.

In addition, the difficulty of each disaster can be high or low, determined by star rating.

For example, the wolves crisis encountered by humans before is the lowest level of the disaster of one-star creatures.

The tribulation of high-star creatures may be even more terrifying than the infinity of low-star epochs.

The star difficulty of disaster increases with the increase of the world level.

In the small world, the highest will only encounter three-star catastrophes, and basically will not encounter the great catastrophes of heaven and earth.

But it is not entirely impossible.

Moreover, when the small world is promoted to the big world, it will definitely encounter an infinite disaster in an era.

Cao Tian remembers that in the novel he wrote, the protagonist encountered a rare drought when he was promoted to the world.

After three months, the rain had not yet fallen, there was not even a cloud in the sky. The sun burned the earth like a stove, and the temperature was as high as fifty degrees.

The forest fires were raging, the land was not harvested, and a terrifying locust plague broke out. The locusts covered the sky and devoured all vegetation.

The whole world is almost turning into a desert.

In the end, the protagonist consumed more than 60 points of the source power of the Heavenly Dao, launched a large-scale Tianze, carried out heavy rain, and was hit by the people. Then he asked humans to capture locusts and feed on them, and finally survived this disaster.

But after the passage, the world was seriously damaged, countless species were extinct, and more than 90% of human beings died, and it was in bleakness. It took thousands of years to slowly recover.

Cao Tian didn't know if he would be like the protagonist in the book, the disaster of promotion or this drought.

Maybe it is, or maybe it is not.

But no matter whether it is, one thing is the same, and it requires enough power to deal with it.

Therefore, the strategy he formulated for himself was to do whatever he could. He could save the power of the heavenly source and could not be consumed casually on meaningless things.

This time, it was a helpless move to consume a little source of heaven and use Tianyu to create a cave.

He had already used his heavenly eyes to investigate, and there was no suitable cave within a radius of more than ten miles of Zhao Qinghe and others.

If he did not create, they would have to sleep in the snow and ice at night.

The temperature below minus ten degrees Celsius, even those primitive people have a good physical condition, will be difficult to survive.

Even if you can't die, you will definitely die part of it.

The human race is crucial, there is not much left, and Cao Tian can no longer withstand more losses.

In the small world, the ability of heaven is not strong. His current ability of heavenly education cannot independently nurture a wise race, and he can only rely on these humans for the time being.

As for Zhao Qinghe, she already has a soul, but she only created a body for her with the branches of her life and resurrected it, which is not a completely nurturing life.

Thinking of these things in my mind, Cao Tian used the heavenly eye to continue observing the progress of the lower realm.

...

now.

In the cave, Zhao Qinghe had already greeted all the primitive people in.

Then everyone will be assigned a place to sleep and spread hay on the ground.

It is said to be hay, but because it is covered in snow, it is actually a bit wet.

I'm afraid I feel very uncomfortable when I sleep on it at night

"It would be great if I could bake it on fire."

Touching the wet dry grass, Zhao Qinghe frowned, and suddenly moved in her heart, thinking of fire.

Flame, in the primitive era, was an extremely important thing for primitive humans.

It can not only dry damp things, use them to keep warm and lighting, but also barbecue food, eat cooked food, and even drive away wild animals, etc. It is of great use.

Flames have the saying that the source of civilization is the source of civilization.

Because of mastering fire, human civilization has emerged.

"I remember that the ancient human ancestors of Earth used to drill wood to make fire, so I can try it."

Thinking of this, Zhao Qinghe stood up, greeted several male primitive people, and left the cave.

In the snow forest, a large number of fallen branches were picked up.

After searching for a circle, I saw a stone vertebra more than half a foot long in front of a stone wall, which was smashed down by a primitive man and brought it back into the hole with the branches of the tree.

Then, I picked one of the driest trunks, and picked a lot of dry dry grass and put them together.

She picked up the ruler-long stone vertebra, faced the tree trunk, and began to drill.

Rubbing her hands, drilling and drilling. After drilling for half an hour, her hands were sore and no sparks appeared.

However, Zhao Qinghe touched the drilled place on the wood, which was already quite hot, which means it was still effective.

"This is really a patient life, come on, you keep going."

She handed Shi Zizi to a bystander male primitive man, then pointed to the wood and asked him to continue drilling.

Seeing Zhao Qinghe having been in trouble for so long, the male primitive man easily understood what she meant. After taking it, he learned her movements and rubbed his hands and started to drill.

But after drilling for more than half an hour, the wood still didn't react.

Seeing that the male primitive man was exhausted and panting, Zhao Qinghe asked him to stop and change to another person.

After half an hour of drilling, I still didn't respond.

"This is too difficult. I don't know how the ancestors of the earth drew the fire."

Zhao Qinghe was a little depressed, and then changed to another person and continued to drill.

Immediately, the primitive people began to take turns to rub stones and drill wood.

Time passes slowly, the sun sets, and night falls.

The cave gradually became dark, and the cold wind blew in along the entrance of the cave, making it icy and harsh.

Zhao Qinghe led a few people, moved some stones, blocked the hole, and left some gaps for ventilation.

This not only covers the cold, but also prevents wild beasts from attacking at night.

Then, she returned to the hole and sat on the somewhat wet dead grass, and continued to let the primitive people drill wood in the dark.

More than two hours passed, and when Zhao Qinghe became sleepy and drowsy.
Chapter completed!