"Guess how much weight I've lost?"

"Thirty pounds."

"Unfortunately, I guessed wrong." Tang Yue glanced down at the number on the scale, "I only lost twenty-nine pounds." ”

The old cat rolled his eyes, "What's the difference?" If you pull another pound of, won't you lose thirty pounds? ”

"Do you believe that I can still lift fifty kilograms now?" Tang Yue lifted the robe on his body, bent his arms, and tried to puff up the biceps on his arms.

Bathed in the warm spring breeze of the OGS cabinet, Tang Yue returned to the way of life of the ancient Romans, wearing pants and a light robe.

The time when the temperature control system failed is a nightmare in retrospect, and Tang Yue himself doesn't know how he survived.

"Anyway, the gravity of this hellish place is less than 40% of the earth's, and the 50 kilograms of things on the earth weigh only 19 kilograms here." The old cat said, "I suggest you don't try to move that cabinet, so as not to hurt the instep of your foot, if you break a bone it will be very troublesome, we don't have enough medicine...... You have to realize that your osteoporosis is about the same as that of a sixty-year-old man, so don't joke about your body. ”

Living in a low-gravity environment for a long time, coupled with a serious lack of nutrition, the human locomotor system will be very seriously affected, muscle atrophy, calcium loss, calculated that Tang Yue has been alone on Mars for two hundred and seventy days, although he has been strictly implementing the physical training program, but the weight has still dropped thirty pounds.

He was originally a man weighing one hundred and forty pounds, but now he weighs only one hundred and ten pounds, and the ribs on both sides can be seen.

"You have to be careful that you can't let yourself lose weight anymore, and if you weigh less than 90 pounds, then it can have very serious consequences."

The old cat stared at the computer, tapping on the keyboard, and on the screen was an open document, densely filled with handwriting.

"Mr. Cat, in the history of the Earth, what factors determined the size of living things?" Mai Dong asked, she is reading the genealogy of biological evolution, and writing a biography of the history of the earth is also one of her and Tang Yue's goals, "I am looking at the evolution of organisms over the past few hundred million years, and I have found a very significant feature, that is, the size of animals fluctuates periodically. ”

"Body size?" The old cat thought for a while, "There are many factors influencing this, including the oxygen content in the atmosphere, the ambient temperature, the abundance of food, and the ecological niche of the animal itself, for example, in the Carboniferous period more than 300 million years ago, the size of arthropods in that period was generally more than ten times or even dozens of times the size of modern times, such as the famous giant tailed dragonfly, which can grow to more than half a meter long...... The main factor responsible for this phenomenon is the oxygen content in the air, which in the Carboniferous period was the highest in the history of the Earth, up to 35 percent. ”

"If a creature occupies the top of the food chain, in the right climate and when there is plenty of food, then their size will be significantly larger." "In addition, the animals of the oceans can grow to be larger than land creatures due to the buoyancy of water to support their weight, such as the blue whale, which is the largest animal ever built on Earth, with a heart weighing a ton. ”

"The biggest blue whale?" Tang Yue interjected, "Where did you put my New Zealand big fish dragon?" ”

"Don't take out the kind of folklore that doesn't have enough evidence to support it." The old cat shook his head, "In the field of paleontological research, you can't have a curious mentality. ”

"Why do cetaceans grow so big?"

"Because cetaceans are at the top of the food chain, they can eat whatever they want, and they have no natural predators except for some kind of two-legged ape with a whaling cannon." "Their rivals, sharks, were defeated two million years ago, and after the tooth became extinct, no creature could shake the whale's dominance in the ocean. ”

"Big Tooth?" Mai Dong had never heard of this word.

"Megalodon, megalodon." "This shark is the most terrifying sea monster ever built on Earth, and they are the pinnacle of aquatic predators, feeding on whales. ”

"Can a megalodon outperform a dragon?" Tang Yue asked, "I've been thinking about this question for a long time, which one is more awesome?" ”

"The dragon is a very old and primitive marine reptile that is not as adaptable to the marine environment as fish, the megalodon is a highly evolved predator, every part of its body exists entirely for hunting, and the only one that can compete with the big tooth in the same era is the equally huge supertooth whale."

"Dragon King Whale?" Tang Yue asked.

The old cat shook his head, "Melville Leviathan Whale." ”

"The megalodon is so awesome that it went extinct in the end?"

"The better it is, the easier it is to become extinct." The old cat pricked up a paw, "You must know that almost all the large predators in the history of the earth were starved to death in the end, and once the environment changes and the prey is insufficient, their intake cannot be replenished for consumption, so you see that the blue whale is very smart...... It is an honest filter feeder, with a big mouth and a sea to eat in all directions, stupid and cute, and there is no need to worry about hunting. ”

Mai Dong nodded and sighed, "Now they're all gone." ”

She and Tang Yue sorted out the genealogy of the evolution of life on Earth, which is a huge and complex framework. At first, the imagination of the two of them was very good, but when they really did it, they realized how difficult it was, at the beginning, Tang Yue's brain slapped and said that it started from Cambrian, and now he is looking for regret medicine all over the place.

From the Paleozoic Era to the Mesozoic Era and then to the Cenozoic Era, life on earth has been bumpy all the way, after five mass extinctions, the causes of each extinction are different, the continuation and evolution of each type of organism are different, the scope is so wide and the number is unimaginable to ordinary people.

Three days later, Tang Yue: It's so accurate that you can't do it, or let's be accurate to the department, right?

Six days later, Tang Yue: It's impossible to be accurate to the subject, or let's be accurate to the outline, right?

A week later, Tang Yue: I can't do it if it's accurate, why don't we give it to the old cat accurately?

So the old cat took over most of the work, which it expected, and it knew that it would not be possible for these two to accomplish such a huge work.

In the past three months, the two of them and one cat have completed a total of more than 4 million words of the evolutionary history of the earth's creatures, and Mai Dong and Tang Yue have completed one percent of it, believing that they have played a key role.

They converted the text into digital encoding, and then designed a self-interpretation system, and broadcast it out together, this data volume is very huge, but not the largest, the old cat also converted the famous paintings "Mona Lisa" and "Genesis" into numbers, this data volume is even larger, of course, this is not the largest...... The 3D modeling data of the Broken-Arm Venus and the Discus Thrower is the largest, and mathematics is the most likely common language in the universe, as long as someone can receive the signal, according to the self-interpretation system, the code can be reduced to words and images.

The manuscript is kept in the hard disk and left in the Kunlun station.

Tang Yue and Mai Dong did not have the luxury of completing all the work, when they really stood in front of the giant wall of the history of the earth, the two realized that this wall is boundless, this is simply beyond the reach of human beings, even the old cat can not really complete it, this is a work with no end, they can always reach the end of their lives.

Tang Yue has already explained to the old cat, even if he and Mai Dong are gone, the old cat himself will continue to record the history, anyway, it is idle and idle.

In addition to completing the two imperial masterpieces "The Evolution of Earth's Organisms" and "The History of the Development of Human Civilization", Tang Yue is also thinking about another crucial issue.

He was thinking about how to put Mai Dong next.