Short video: Shocking the world

[The Gao family of Northern Qi had only one normal person, Lanling King Gao Changgong, but he was still killed! ]

[He was killed because he was normal. ]

Some members of the Northern Qi royal family and Emperor Xiao Zhao Gao Yan said: We are also normal people.

[Gao Changgong may have died without having an attack! ]

[The Gao family may have hereditary mental illness. ]

Ancients: What is mental illness?

[It was not called mental illness in ancient times, right? ]

[Ancient mental illness was called "epilepsy", "mania", and "heart disease". ]

[I think of a certain crazy guy. ]

Ancients: I see, it turns out that all members of the Gao family have epilepsy!

Holy Light Descends [The Gao family of Northern Qi does have hereditary mental illness. It has been more than a thousand years. It can still be passed on to me in my generation! ]

[It has been 1,400 to 1,500 years since the fall of Northern Qi. It has been dozens of generations. Can mental illness still be passed on to you? ]

[Compared to other diseases, the probability of inheritance of mental illness is indeed high! ]

Throughout the dynasties, people with a family history of epilepsy had a melancholy look on their faces.

They also didn't expect that epilepsy could be inherited through blood for more than a thousand years.

Holy Light Descends [Maybe I am a special case, I have regressed! ]

"Regression? I said, what disease can be passed down for dozens of generations? I'm scared to death!"

"Which son of Gao Huan are these descendants of Gao Huan? If he regresses, will he be worse than his ancestors?"

"How to cure epilepsy? Is it incurable?"

...

Seeing the handsomeness and perversion of the Gao family, the emotional immunity of the ancients increased greatly.

The system decided to show them something else, let the ancients see the population of later generations, and see the grain production of later generations.

The system thoughtfully converted the calculation units of ancient and modern times.

"How much? What is the population of the future?"

"1.4 billion is 1.4 billion?"

"There are so many people in the future!"

"How do the future feed so many people?"

Just when the ancients were curious about why the future could feed so many people, they saw the annual grain output of the future in 2023.

"What? The grain output per mu in the future can reach 1,000 catties?!"

"In the future, 500 grams is one catty, and 2,000 catties is one ton. The total grain output in the future is 695.41 million tons per year. One catty of my Great Qin is 253 grams of the future, which is about half a catty. In other words, two tons of my Great Qin is equal to one ton of the future. The grain output of my Great Qin..." The first emperor Ying Zheng used the calculation unit of the future to calculate the grain output of the Great Qin. Compared with the future, the result is obvious, far less than that of the future.

"Aren't the three northeastern provinces of the future the land of Liaodong? It's cold and barren there, how can so much grain be grown there?"

"The three northeastern provinces are the birthplace of my Qing Dynasty!"

"I have been farming for my whole life. Using the methods of the future, 300 kilograms per mu is already a good harvest! In the future, the yield is actually 1,000 kilograms per mu! I dare not even think about it!"

"No wonder the future can support so many people!"

...

[Comparison of modern grain production and ancient grain production]

["How much grain can be produced per mu in ancient times? How does it compare with modern times?"

["Ancient and modern The difference between the two dynasties is huge. ”]

【“If we put aside the issue of crop types and only talk about yield, the "Book of Han·Food and Goods Records" records: Today, a man with five people can cultivate 100 mu of land and harvest 1.5 shi per year. ”]

【“Converted to the current number of acres and yield, the average yield per acre in the Han Dynasty was 63 kilograms, which was the highest agricultural level in the world at that time. ”]

【“During the Wei, Jin, Southern and Northern Dynasties, Ji Kang mentioned in "Health Preservation Theory" that one acre of ten hu is called a good field, which is a common name in the world. In other words, if one acre can produce ten hu, it can be called a high-yield field. ”]

【“At that time, the whole country used this as a standard, and the average per-acre yield was about 90 kilograms.”】

【“By the Tang Dynasty, whether referring to the New Book of Tang or the Old Book of Tang, or even in the records of the Tibetan Literature, the average per-acre yield level was one to two dan, and the rice in the south could reach three dan, about 138 kilograms per acre.”】

【“This is due to the fact that the land reclamation efforts in the Tang Dynasty were greater than those in the Qin and Han Dynasties, and the per-acre yield range of rice in the south became wider.”】

【“The per-acre grain yield in the early Song Dynasty was basically the same as that in the Tang Dynasty.”】

【“Zhenzong Dazhong During the Xiangfu period, high-yield Champa rice was introduced from the Indochina Peninsula and promoted in the Jianghuai and Liangzhe regions due to its early-maturing and drought-resistant characteristics. "]

["During the Southern Song Dynasty, the planting area was further expanded, and it was combined with the local late rice to form a double-season rice, which greatly increased grain production. The per-acre yield in agriculturally developed areas was more than twice that of the Tang Dynasty. "]

["According to Mr. Min Zongdian's article on the per-acre yield of rice in the Taihu Lake area during the Song, Ming and Qing dynasties, the general conclusion is that the per-acre yield in the Song Dynasty was 225 kilograms, the per-acre yield in the Ming Dynasty was 333 kilograms, and the per-acre yield in the Qing Dynasty was 278 kilograms. "]

["In theory,It is said that the grain yield per mu should be higher in later dynasties, but the grain yield per mu in the Qing Dynasty was not as good as that in the Ming Dynasty. "]

["In fact, there was a leap in rice yield in the Qing Dynasty. In the 54th year of Emperor Kangxi's reign, Li Xu, a relative of Cao Xueqin and the Suzhou weaver, tried to grow double-season rice in Suzhou. He planted it for six years and the average yield per mu was 810 catties. The most abundant year was 915 catties per mu. This yield is definitely the highest record in ancient China. "]

["Modern wheat can easily yield nearly 1,000 catties per mu. Even in the barren areas of border provinces, the average grain yield per mu is still as high as 559 catties, which is obviously much higher than in ancient times. "]

["It is currently known that Chinese rice is generally 1,200 catties per mu, and the highest yield has reached 2,654 catties per mu. The reason why Chinese rice has made such great progress is that hybrid rice has made the greatest contribution. "]

"Can the future still produce 2,654 catties per mu? Even in barren land, more than 500 catties of grain can be grown? ! I dare not even dream of it!"

"What is hybrid rice?"

"The Qing Dynasty could grow more than 800 kilograms of grain per mu, or even more than 900 kilograms, which is very close to the 1,000 kilograms per mu in later generations!"

As for dynasties like the Qin and Han dynasties, the earlier they are, the more we envy the later dynasties, whose grain production is higher than the last.

[Are the data in the video true or false?]

[I don't know, it should be true!]

[Isn't it said that the grain production of the Song Dynasty was more than twice that of the Tang Dynasty? The Tang Dynasty had an output of 276 kilograms per mu, and the Song Dynasty had an output of 450 kilograms per mu, which is not more than twice as much?]

[It's talking about agriculturally developed areas, not all areas.]

[I always hear that people in ancient times were not full? This grain production doesn't look as good as modern times, but it's not enough to starve to death, right? Take the Qing Dynasty as an example. I just checked. The population in the early Qing Dynasty was only tens of millions, and in the later period it was more than 400 million. The land area of ​​the Qing Dynasty was larger than ours, and the per mu yield was If it can really reach 550 kilograms, the people should be able to eat their fill. ]

[In ancient times, there were natural disasters and man-made disasters, such as droughts, locusts, and rainstorms, or man-made disasters such as continuous wars. Ancient people had no harvest for a year or even several years. In addition, they had to pay taxes to the court. When the court went to war, they consumed more grain! ]

[What the above said is very right. Another point is that in ancient times, it was a feudal dynasty, and the land was in the hands of nobles and landlords. The emperor, nobles, and landlords had three-quarters of the grain grown in the country in a year, and the bottom peasants had only one-quarter. ]

[This is also why, although the grain output is increasing, the peasants can never withstand the tossing and will starve to death when encountering natural disasters and man-made disasters! ]