Qiu Hao smiled, remembering the lack of spiritual energy, and finally sighed: "Xiao Mo, tonight, I am going into the mountain again, and it may take another day or two to come back!"

"Into the mountains again? I just came back today, why are you going again?" Qiu Mo said dissatisfied, Qiu Hao said this on the night of four days ago, and then went for two or three days, and only came back in the early hours of this morning, but he didn't expect that he had only been in the day now, and he was actually leaving again.

"There's no way around it, in fact, I didn't finish my business, I just sent back the loaches that cut the hair and washed the marrow, this is an accident, I'm going to leave later."

Qiu Hao smiled bitterly, the world is unpredictable, his current spiritual energy is only about three hundred, not to mention that he will treat Zhou Jianshu's eldest brother Zhou Jianshu in a few days, and he can't even take out a thousand points of spiritual energy to optimize seedlings, so he can't do it if he doesn't go.

"Do you want to bring loaches with you this time?"

Qiu Hao looked at the loach basking in the sun outside the window, there was no new hair on its body of two millimeters, how to resist the cold of the Ice Age, even if it was a genetically evolved dog, it was estimated that it would not work, so he said: "I won't take it this time, the place I went to is very cold, according to the current appearance of the loach, if you go, it will soon freeze into a popsicle, and now it is too edible, I don't plan to take it until the appetite is restored."

"It's cold... Popsicles? ”

Qiu Mo was puzzled: "Brother, it's summer now, how can it be cold where you go?"

"Antarctica, North Pole, or Mount Everest, etc., in short, there are many cold places in summer, hey, don't ask!" Qiu Hao smiled dryly, he didn't want to hide that Nai was asked to do this by the time and space system.

"If you don't believe it, how can you run that far in two or three days?" Although Qiu Mo said so, she didn't dig deeper.

After greeting Qiu Mo, Qiu Hao began to prepare materials, in fact, it was only food, a total of forty catties of various types of barbecue, of which only five catties belonged to him, and the rest belonged to the spirit dog.

Now there are seven greyhounds, their appetites are raised, two meals a day, a total of more than ten catties of meat consumed every day, and do not eat raw meat, do not eat dead pork, the best is healthy chicken, duck, cow, sheep roast meat, but also ask for some rice and carrots and so on.

For this reason, during this time, Qiu Hao rushed to the market almost every day, and the Wang Butcher and others in the village were also familiar with him.

Joke! How can it be uncooked, you must know that now, Qiu Hao is the number one meat buyer in Fuyan Village, more than ten catties of beef and mutton every day, and the worst is also good lean pork, which is a few hundred yuan, this business is easy to do!

Qiu Hao thought that the barbecue was too slow in the ice age, so he specially bought a large oven that cooked a sheep at one time, as for the storage problem, because the barbecue was too fragrant, in order to avoid attracting wild beasts, and in order to prevent deterioration, he could only use storage space, forty catties is twenty points of spiritual energy, Qiu Hao didn't care about it.

At six o'clock in the evening, Qiu Hao summoned the spirit dog, and the loach could not follow because it was growing hair, and in its envious eyes, Qiu Hao and the remaining six spirit dogs went to the Ice Age.

After Qiu Hao came to the Ice Age, the time here only began to move, and it was now five o'clock in the afternoon, and he complained: "Zhiling, why is it only when I come, the time here will go, every time I come, I always feel that the jet lag is wrong, it's very uncomfortable!"

"That's because you're not in space-time synchronization, that's why you feel this way, and in fact, from a certain point of view, you've never left this plane."

Qiu Hao nodded, it was five o'clock when he first returned, and now it is five o'clock when he comes, and the second hand has not gone a single square, it is indeed always there, this feeling is very subtle.

"What does space-time synchronization mean?"

"It is to keep the time flow rate consistent between different time and space, a few seconds have passed in the original time and space, and a few seconds have passed in the historical time and space, but this will consume spiritual energy, ten points of spiritual energy in an hour."

"It's so expensive, it's stupid to do this! Zhiling, is there a trick, for example, let me come to Ice Age every time it's eight o'clock in the morning! Qiu Hao fully imagined.

"Yes, but it will increase the computation of the system, and you will need to pay an extra hundred psionic points each time."

"One hundred points...... It's a good deal, it's much better than my stupid overnight stay, which takes more than ten hours in vain, after all, I can't act in the dark, and the time and space management fee for more than ten hours is more than a hundred points, if I knew this, I would definitely choose to travel directly to the morning. ”

Qiu Hao didn't blame Zhiling for not telling him in advance, and he can see now that Zhiling doesn't have the habit of reminding people.

Through the small window of the tent, he looked at the No. 2 Snow Mountain, which he had been to several times, and the No. 3 Snow Mountain, which he planned to go to early tomorrow morning, he suddenly felt in his heart, and there was some inspiration about to grasp, and after a while, he explored: "Zhiling, there is no ginseng to collect at the foot of the No. 1 Snow Mountain and No. 2 Snow Mountain, so can the system go back to yesterday and the day before yesterday, so that I can collect ginseng again!"

Someone's idea is very simple, for example, yesterday the fruit was ripe, but it has been picked and eaten. So he wanted to go back to the old days again and again, pick the fruit again and again, and eat it again......

If you want to worship money a little and change the concept of fruit for money, then the money that has been used can still travel back to the past and be used again, just like a money printing machine, endlessly withdrawing money.

"It's not possible, it's a view of causality."

"Cause and effect insanity... What is it? ”

"One of the taboos of the law of time and space, history is unique, and time travel can be interspersed to a certain point in the timeline, but history cannot be repeated or subverted. In the same way, matter has similar properties, and when it is consumed, there will be no more. ”

"Why, can't I cross over, if I remember correctly, I spent less than ten days in Ice Age, if I can travel back ten days ago, I haven't picked a single ginseng plant at that time, what's the problem with picking it again?"

Zhiling did not answer, but asked rhetorically, "Do you know about perpetual motion machines?"

Qiu Hao didn't know why Zhiling suddenly pulled the perpetual motion machine, and said, "I've heard of it, what's wrong?"

"Repeating history involves a real perpetual motion mechanism, repeating back to the past, using the method of cause and effect, reusing the energy that was once used, so that there will never be any kind of energy crisis, and from the perspective of life, no one will ever die, because if you die, you can go back to the past...... Having said that, do you think you can repeat history?"

Bang me! Qiu Hao couldn't think of any bull who could do this, anyway, the earthlings didn't expect it, but what about the aliens, he asked curiously: "Zhiling, has the Keduo civilization done it?"

"You can only verify, but you can't do it, let alone control it, it's the same for the whole universe, even if it's a god-level civilization."

"If you can't do it, that's good!"

Qiu Hao suddenly woke up a little, and he was also a little lucky, if the Keduo civilization had the anti-heaven technology that repeated the history, then it would definitely be immortal and immortal, and how could the space-time system fall into his hands, and even, the Keduo civilization didn't even need to make the space-time system.

He sighed for a moment, suddenly thought of his relatives who had been dead for many years, and asked expectantly: "Zhiling, you know that my parents and grandparents are gone, so can I travel back in time and meet them?"

"I can't."

Qiu Hao's heart tightened, in fact, after so many years, he had already seen it, but his disillusionment still made him a little unacceptable, and said bitterly: "I can't ...... Why? ”

"The reason is a bit complicated......"

"Then let's keep it simple, make it clear!"

"History is a line, normal history should be extended from top to bottom, and the mechanism of the space-time system is from the bottom up, allowing the host to return to the past, although what the host did is also a real history, but it is still a smuggling behavior, which will cause turmoil in the laws ......of time and space, and the laws of time and space need to be monitored, repaired, and maintained."

"Don't talk nonsense, be specific."

“…… The time and space in which the host is located, going back a hundred years, cannot be traveled through this period. ”

Qiu Hao's eyes widened and asked, "Why?"

"There are two reasons, one is that during this period, because it was too close to the original space-time, the laws of space-time were extremely strong, and the system was difficult to break.

The second is the repair and maintenance of time and space. The result of crossing is to cause abnormal history, and the laws of time and space will repair and maintain these abnormal histories, so the era of time traveled to must be maintained for a certain number of years with the original time and space, as a safe period, and the system calculates that the safe period on the earth is about 100 years. ”

Safe period? Qiu Hao choked, how did he feel very much like a woman's one, but in this way, he couldn't cross over to see his relatives, sighed slightly, he thought he could try to change the fate of his relatives, but he found that there was no door......

A hundred years of security, that is to say, the period from 1916 to the present is impassable, Qiu Hao can't help but recall the history textbook, remember that in 1916, it was the First World War, Yuan Shikai, known as the "Chinese Washington", said that the emperor died, Cai Ye engaged in the national defense movement, and he also died that year, well, and the publication of "New Youth......

Qiu Hao calmed down and continued to ask, "I remember you said that even if you find a space-time node, it will have to be repaired and transformed, right?"

"Yes, the original space-time nodes are very unstable, and the system needs to consume a lot of psionic operations to build a solid and stable space-time tunnel."

"Do I need to consume a lot of psionic energy?"

"Yes, to stabilize a space-time tunnel, the number of psionic energy consumed varies, but at least 10,000 points are required, and there is no upper limit."

Qiu Hao swallowed his throat when he heard this, and felt that for a long time, he would not be able to open up a historical time and space other than the Ice Age.

…………

Early in the morning, as soon as the sky was bright, Qiu Hao stepped out of the tent, and after walking at the foot of No. 2 Snow Mountain, then he needed to go to No. 3 Snow Mountain.

The tent was put into the storage space, and the last time he moved the tent from the No. 1 Snow Mountain to the foot of the No. 2 Snow Mountain, he was tired, so he was not so resistant to using the storage space!

Dozens of minutes later, Qiu Hao came to the foot of No. 3 Snow Mountain, as before, for safety reasons, only searched for ginseng two hundred meters at the foot of the mountain, hundreds of thousands of meters, Qiu Hao did not dare to set foot in it, perhaps only when the loach's hair was regrown and could withstand the severe cold, he could really set foot there.

The loaches are not there, and the formation of the spirit dogs is not the strongest, but Qiu Hao didn't worry too much, thinking that when he first came to the Ice Age, there were two loaches and yellow eels, and they were not even spirit dogs at that time, so they dared to come in that case, and now there are six spirit dogs guarding them, how could they be so afraid that they dare not act.

A day has passed, and another 3,500 points of spiritual energy have been credited to the account, Qiu Hao is in a good mood, it is now more than five o'clock in the afternoon, according to the past situation, it should be down the mountain at this time to return.

After learning that he could set the time for crossing at eight o'clock in the morning by consuming a hundred psionic energy, Qiu Hao didn't plan to spend the night in Ice Age, because then not only would there be no input, but it would also consume precious psionic energy, and the quality of sleep was not good, and even there were problems with safety.

For crossing, Qiu Hao was already very used to it, and soon, a spherical white circle of light with a direct three meters appeared, wrapping Qiu Hao and the six spirit dogs, and a minute later, Qiu Hao and his party disappeared without a trace.

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