"Uncle Guo, Zhizhi, you go out first."

"You!"

Cao Tong stared at the beads in his eyes, almost dying of anger. Why are you doing it early? It's just the juncture that you let me out?

"Is there anything you can't let me know!?"

Tang Yi looked at Cao Tong lightly, "I can let you know anything, but ......" paused. "I can't let the officials know everything."

Day!

As soon as Cao Tong rolled his eyes, he said that Tang Yi had to let him stay for something, it turned out to be a microphone.

It's right to think about it, how did Jia Changchao subdue such a sensitive character? How does Tang Yi use it? Can't you let the official have a number in his heart?

But you can't change your mind again! Lao Jia asked about the point, but you didn't let me listen to it, so I responded.

"Let's go, there's nothing to hear!"

But it was Gu Fatzi who jumped out and pulled Cao Tong out.

"It's not." Boss Cao Tong was not happy. "You let me go."

"Let's go and go to Wu Xianggong for tea."

Gu Fatzi acted as if he hadn't heard it, and he didn't reason with Cao Tong at all.

Silly? Let a sleeping dog lie!

......

Seeing the two go out, Tang Yi did not cut directly to the topic, but asked abruptly: "What does Xiangye think of the prosperity of the Song Dynasty?" ”

Lao Jia shook his head with a wry smile, "Shengshi? How can there be such a weak and prosperous world? ”

"It's barely rich, it's peaceful......"

Tang Yi nodded approvingly. Lao Jia can say this, which shows that he is also helpless in his heart.

However, this was not Tang Yi's purpose, and he continued to ask: "Then where did this rich peace come from?" ”

Lao Jia frowned, "Zihao wants to talk about your Guanlan business, right?" ”

"That's right! In today's situation, business has indeed made a huge contribution, but ......"

"Does Zihao want to use this to answer the old man's question?"

Tang Yi smiled, "Definitely! ”

After a little hesitation, "Forget it, let's change the angle and change the question!" ”

"Xiangye thinks that the first emperor will unify Liuhe, what is the foundation?"

Lao Jia frowned again, "What do you want to say?" ”

"I want to talk about food, and about the population."

"Grain?" Jia Changchao instantly grasped the vein. "Do you want to say that the reason why the First Emperor was able to unify Liuhe and take advantage of the grain?"

"That's right." Tang Yi agreed. "We might as well interpret the past from the perspective of food, and then see the present and the future clearly."

Jia Changchao pondered for a long time, Fang nodded slowly, "That's not wrong when you say that." ”

"Before the Warring States Period, the Central Plains fed on millet, and after the higher yield of wheat was introduced to the Central Plains, the first to benefit was Qishan and Shaoliang, the prosperous places of the Qin State. It is precisely because of this that this small country guarding Xirong can level Liuhe and unify the countries. ”

Tang Yi took over the conversation, "That's right." ”

"From ancient times to the Shang and Zhou dynasties, the agriculture of the Central Plains was dominated by 'millet' to feed the people of the four seas. However, the production of millet was limited, and by the time of the Warring States period, it had become saturated and could no longer feed more people. ”

......

From ancient times to the present, the principle pursued by the Han people is to have as much food as there is and how many children to raise.

Therefore, the output of food is directly related to the size of the population.

During the Xia and Zhou dynasties, the number of people that millet could support was already the limit of the Warring States period.

And it was at this time, when the Chinese civilization was at its peak, that wheat was introduced to the Central Plains from the west. The first to profit was the Qin State.

Where there is bread, there are people. Some people just have combat effectiveness.

It was precisely because of the chain reaction caused by grain production that Qin had the opportunity to compete with Chu for the big fat meat of Ba Guojing salt.

With the important economic material of salt, Qin's prosperity is even more unshakable.

......

"Qin used wheat to revitalize the national strength, and after hundreds of years, it was the benefit of wheat that established the prestige of the rich land of the Central Plains."

"However, wheat, like millet, has limits. In fact, by the Tang Dynasty, the population of the Central Plains had reached the limit of wheat, and another high-yield crop was needed to break the shackles. ”

......

"The old man understands what you mean."

Lao Jia followed Tang Yi's train of thought and continued: "You mean, the prosperity of the Great Song Dynasty is because of the discovery of this kind of agricultural product that breaks the shackles. ”

"So, in addition to the prosperity of business, the current wealth and peace also have its merits?"

Until now, Lao Jia finally reacted that what Tang Yi wanted to talk about was not business, but Zhancheng rice.

Tang Wenyan arched his hand slightly: "Xiangye Gaojian!" It is Champa rice. ”

......

In fact, the history of rice cultivation in the land of China is very early, and it can be mentioned more than 7,000 years ago.

Unfortunately, because of the yield, and because of the growth cycle and technology, rice has not been able to replace wheat and break the constraints of grain on the Central Plains civilization.

Needless to say, the yield of the original rice seeds in the Central Plains is not higher than that of wheat, and it takes five months from transplanting to maturity. In addition, the seedling period is one month, that is, half a year, and only one season can be planted a year.

Therefore, rice is the main food crop only in the Jiangnan region, and in the north, it is still the world of wheat.

Until the advent of Champa rice......

Later generations of people have a misconception about this rice from ancient Vietnam, that is, they think that it has a higher yield than the original rice in the Central Plains.

Not really. Even if the yield of Champong rice is high, it is not high enough, and it is not high enough to make the population of China riotous.

Its biggest advantage is not the yield, but the ripening period.

It takes only three months from planting to harvesting, and in some areas it can even be completed in two months.

That's too critical.

It is possible to plant two crops in the south of the Yangtze River and three crops in places like Hainan.

In addition, because of the short growth cycle, it is perfect to avoid the rainy season and typhoon season in the south, and the disaster avoidance is more stable.

Most importantly, in the north, the situation of only one season of wheat has been completely reversed, and there is enough time to plant one season of rice and another season of wheat.

This is a qualitative change from "one" to "two"!

It is also why the two Song Dynasty have strong enemies on the side, the three redundancies are difficult to eliminate, and natural disasters are continuous, and they can still get along...... And it's not bad, and it's even one of the reasons why it became the richest dynasty in history.

Because, it's a good time to catch up.

If we interpret the history of China from the perspective of grain, then wheat is the first stage, and Champa rice is the second.

......

Lao Jia found that chatting with Tang Yi in depth was a very enjoyable thing. This little madman has a unique ability to make people think.

As the former prime minister of the Great Song Dynasty, he thought about the importance of grain, how to produce more grain, and what inspiration the lessons of his predecessors would bring to today.

However, he never thought of putting food in the overall perspective and examining the history of more than 1,000 years......

He sighed: "As I say, my generation is incompetent!" ”

"I waited for a thousand years, but I still got the country to where it is today!"

......

Tang Yi looked at Lao Jia, "It's not a thousand-year opportunity, it's two!" ”

"Two?"

"Yes, two! One is happening, one is ...... It has arrived. ”

Stand up," Xiangye moved to speak. ”

Invited Jia Changchao to the table, took out a large map of mountains and rivers, and slowly unfolded it.

Lao Jia opened his eyes and wrote a few big words: The territory map of the Great Song Dynasty.

However, the picture is quite big, the characters are also quite big, and the Great Song Dynasty seems to be ...... It's a little small, huh? Only a small point is drawn in the middle of the diagram.

Tang Yi pointed to the far right on the map, which was almost ten times the size of a large piece of land in the Great Song Dynasty.

"Xiangye should already know by now that the other side of the sea is not the end, but another land."

Jia Changchao nodded, "Well, although it's only been two days, Yazhou is full of bizarre legends of that continent. ”

"That Xiangye should also know that the fleet brought back something over there."

"You mean corn? Potatoes and sweet potatoes? ”

"Yes." Tang Yi nodded heavily.

"These few things, in terms of output alone, can at least double the grain output of the Great Song Dynasty!"

"Moreover, if it is actually promoted, it is far more than double, and it is not impossible to triple or quadruple!"

"Oh?"

Tang Yi explained: "Xiangye doesn't know yet, right? Corn and potatoes are not only produced in amazing quantities, but also do not pick the ground. ”

"Sweat-resistant, cold-resistant, heat-resistant, salt-alkali resistant, extremely adaptable, even in the mountains, stone crevices can be planted."

"Does Xiangye know what this means?"

......

Jia Changchao's eyes widened, he never expected that among the hundreds of small ships, the seeds in the most inconspicuous boat were so treasured.

"Population!"

Lao Jia almost roared, and a green light flashed in his eyes.

"If this is the case, there is nowhere in the world that there is nowhere to plow, nowhere to plant, and there will inevitably be a sharp increase in household registration!"

"Today, there are 60 million households in the Great Song Dynasty, and nearly 100 million people (the average household in the Song Dynasty was less than two people) ......"

"If it can skyrocket four times, it will be more than 400 million!"

"Huh."

Tang Yi smiled extremely happily and asked a question that made Jia Changchao unable to sleep for three days:

"We didn't grasp the opportunity of the last millennium, so if we give Xiang Ye a good game of chess equivalent to four Great Song Dynasty this time, Xiang Ye plans to ......"

"If, what, fall, son!?"

......