"The Roman Empire?" The old cat buried his head in the cabinet, sorting out the clutter, "The Roman Empire is a very typical centralized classical empire, although its political system is not as stable as the ancient China of the era, it is still the only huge country in history that almost dominates the whole of Europe, at its peak the Roman Empire was large enough to include the Mediterranean Sea as an inland sea, after the fall of ancient Rome until the disappearance of the earth, Europe has not been unified. ”

"The Western Roman Empire fell in the fifth century AD."

"Yes, in fact Rome was already substantially divided in the fourth century, and the Western Roman Empire was destroyed by the Germans, Huns, and Goths at the hands of the barbarian invasions, which was the first large-scale migration of peoples in history." The old cat put the bottles and cans in the cabinet on the floor, "Since then, the glory of ancient Rome has ceased to exist, Europe has been plunged into a thousand years of war, citizens have become serfs, the church has controlled people's minds, and no one has discussed philosophy and art anymore." ”

"Is this a step backwards?" Mai Dong asked.

"Spiraling." The old cat paused, "Miss Mai Dong, history is spiraling, people sometimes go the wrong way, but not all the time, in engineering, this is called negative feedback control." ”

"Wasn't the Middle Ages a dark age?" Tang Yue's voice sounded in the channel, "The Church is hostile to all opposing theologians, and the Inquisition declares them heretics, and then pushes them into the fire and burns them to death, right?" I remember Bruno and Copernicus in the primary school textbooks. ”

"Then you should learn to look at things outside of the textbook."

"Anyway, the reputation of those gods is not very good." Tang Yue muttered, "As a Chinese who studies materialism, I was born with a buff to criticize religion. ”

"Your school textbooks have given you the impression that theology and science are at odds with each other, and that view is very one-sided." "The church was not hostile to science most of the time, on the contrary, many people in the church were proficient in mathematics and astronomy, and the world's most famous and greatest physicist, Isaac Newton, was a theologian himself, Newton spent only twenty years studying mathematics, but he spent his whole life studying theology, and he was convinced of the existence of God." ”

"In those days, very few scholars were able to dissociate themselves from religion because the schools they attended were all church-run." "Even in the Middle Ages, when Europe was plagued by wars, plagues, and a very low level of education among the common people, religious institutions objectively assumed responsibility for the transmission and continuation of culture...... Although they will only teach you how many gods can be danced on the tip of a needle. ”

"Is it useful to teach that kind of thing?"

"In the Middle Ages and even in modern Europe, there was no strategy and development of rejuvenating the country through science and technology." The old cat straightened up, "Philosophy and science are the hobbies of the rich, in addition to calculating the angle of the fountain in the garden for the king and estimating the range of the cannonballs, do you think that mathematics and physics can be used in the potato field?" ”

"Ignorant Europeans." Tang Yue shook his head.

"Asians of the same era were immersed in hard study, imperial examinations, and at the end of the Qing Dynasty, Lafayette played the drama of horse-drawn trains, and she was the earliest Marxist-Leninist in China on a literal level." The old cat said lightly, "How good can it be?" ”

Tang Yue dragged the solar panel out of the garage, where the Martian stray dog was parked and charging.

Last time, the old cat drove the Martian stray dog out to search for the Chelome, and accidentally fell into the pit, the damage to the rover was very serious, the entire front of the car was deformed, and the glass was all shattered, and now the Martian stray dog is similar to a convertible car, and the cockpit at the front of the car is only left with a polygonal frame, and the view is excellent when you sit on it, but it leaks on all sides.

Every day Mai Dong would discuss humanities and history with the old cat, one person and one cat from Macedonia to ancient Rome to Carthage, Tang Yue was difficult to interject a sentence, after all, his history was so bad that he could only applaud on the side.

With the old cat here, it's not too difficult to roughly record history.

It's just that once the brushstrokes are deepened, many questions can not be answered even by the old cat, and a large number of historical unsolved cases have not been solved so far, the old cat is not a historian, it can only carry the research results of predecessors.

It's easy to stump the old cat, and Tang Yue often asks this kind of question:

"Was Zhu Yunwen burned to death?"

"What the hell is going on with the Candle Shadow Axe?"

"If the peasants don't revolt, will the Manchus still be able to enter the customs?"

The old cat choked.

Hundreds of thousands of words of manuscripts are converted into digital codes in the hands of the old cat, and then broadcast through the antenna of the space station, and the ability of digital to carry information is far lower than that of words, so the broadcast time is very long.

As for the self-interpretation system, it is a set of decoding methods similar to a codebook, like the Rosetta Stone, according to which the person who receives the information can restore the code to the original text, and the computer will incorporate the self-interpretation system into the content of the article when the information is broadcast. In view of the large Chinese font library and the difficulty of splitting the square word structure, it is too difficult to realize the free conversion of numbers and Chinese characters, so it is too difficult to rely on a simple self-interpretation system, so in the end, Lao Mao uses the English alphabet.

In other words, intelligent beings that receive signals can restore them to English.

After the disappearance of the earth, the last language to survive was English.

However, the files on the hard drive on Mars are all in Chinese, and Tang Yue and Mai Dong wrote epitaphs for human civilization in Chinese characters.

·

·

·

"Miss Mai Dong, can you spare time these two days?"

At noon, Tang Yue and the old cat were resting in Kunlun Station, Tang Yue was eating, as usual, compressed biscuit sandwich sugar-pickled tomatoes with a glass of fresh water, Mai Dong was also eating, and she also had a piece of bread.

"Huh? Make time to come out? How long will it take? ”

"It will take at least four hours." The old cat replied, "We need you to get out of the cabin and check the upgraded insulation tiles on the Eagle ship." ”

The old cat adopted Tang Yue's suggestion, the Eagle spacecraft is the only vehicle that can enter the atmosphere without disintegrating, it is the only hope in this desperate situation, but the lander must ensure that the heat insulation tile does not have problems, so checking the upgraded ventral heat insulation tile on the lander is the first step.

It is impossible to inspect the heat insulation tile in the cabin, and Mai Dong has to carry out extravehicular operations.

The old cat was really forced to have no choice, and the scrapped spaceship dared to use it.

"Check the Eagle ship?" Mai Dong was stunned for a moment, and then nodded slowly, "Is it the out-of-cabin operation?" Yes, I have time at any time, and it just so happens that there is a little problem with the twisting mechanism of the S1 battery panel of the space station, and the rotation is not very bright, so we can solve it together. ”

"Something went wrong with the battery board?" Tang Yue had a biscuit in his mouth, and raised his head, a little nervous.

"It's just a very common glitch, the computer has self-checked, and it is said that the sensor is broken, and it is good to change the wire." Mai Dong was also nibbling on the biscuit, she took a bite of the compressed biscuit, and then sucked the water droplets suspended in front of her into her mouth, "The normal line is aging, don't be nervous." ”

The Mars Joint Space Station has been in operation for so many years, there are no major problems, small problems are constant, and it is also a daily task for astronauts to tinker and often go out of the capsule to change materials and parts.

"Then you can go rest later, and pay attention to conserving your strength." The old cat instructed, "We'll start moving in twelve hours, and I'll give you the detailed steps to do it when the time comes." ”

Mai Dong nodded.

"Okay, I see."