Just when everyone was puzzled and wondered if this was the immortal fruit or something, Liu Zhi had already turned his head to Deng Yan and said:

"Let's explain it to them."

Deng Yan smiled slightly, "Obey." ”

I saw him come up and pick up a golden bean from the copper plate.

"The name of this thing is corn, it is a kind of food crop, it can be eaten raw when it is tender, it can be cooked when it is ripe, and it can also be ground to make cakes, and the flavor is very good."

It turned out to be a food crop, and everyone suddenly realized, some people were disappointed, but some people had their eyes shining and they were more interested.

"Corn is very productive and adaptable to dryland slopes, which can complement wheat."

He picked up a yellow tuber and said, "This is a potato, which is also suitable for dryland cultivation, with high yield and pure taste, and is the main food crop overseas." ”

Then he introduced sweet potatoes, cassava, sweet potatoes and the like to everyone one by one.

Because tomatoes, pumpkins, beans, peppers and other crops cannot be stored for long distances, they are all brought seeds, so they are not displayed.

Finally, he picked up an earthy yellow viburnum and gently broke it open, revealing the pink kernels inside.

"This thing is called peanut, also called longevity fruit......"

came, everyone listened to the crops for a long time, and thought that this was the end, but they didn't expect that in the end there was really a longevity fruit.

Suddenly, the whole hall came to their senses, and they all stretched their necks and looked at this miraculous crop in amazement.

"Of course, eating it will not last forever, but it can prolong life, and it is said that this thing can also be used to extract oil."

It's still an ordinary crop for a long time, and everyone was stunned by him, and they couldn't help laughing at this time.

Also, there is no elixir in the world, it is just an ethereal fantasy.

It is still the most realistic food crop that can satisfy the stomach and comfort the people's livelihood in the world.

The atmosphere of the banquet was pushed to the top at this moment, and everyone raised their glasses to toast to Cheng'en Gong and the emperor.

After the dinner was over, Liu Zhi was still in high spirits, and the two returned to the Zhongde Palace, where they had piled up a lot of things sent from the ship.

The two looked at the same thing, and Deng Yan gave him a detailed introduction to the uses of various things.

The things that Deng Yan brought back from South America were far more than those in the hall just now, after all, those were the most impactful.

But there are some things that are not as simple as they seem, such as rubber tree seeds, cinchona seeds, cocoa tree seeds, tobacco seeds, and so on.

Of course, there are many vegetables and fruits that are common in later generations, but have not been seen at all at this time, such as cashew nuts, pineapples, avocados, and so on.

Before Deng performed, Liu Zhi specially mentioned rubber trees and cinchona trees to him in his letter.

These two plants, one of which is of great significance in the history of industry, and the other is an important medicinal raw material.

Because of its unique climate and geographical conditions, South America has given birth to countless magical species, and it is precisely for this reason that Liu Zhixin is obsessed.

Now these species have made up for the missing part of the food crops in the Han Dynasty, and as long as there is no war or anything like that, it is estimated that the possibility of food shortage is equal to zero.

After all, in such a vast land, it is only necessary to feed tens of millions of people.

Of course, as the country becomes more stable and prosperous, the population is likely to grow explosively.

Therefore, as the country's top leader and decision-maker, he must plan ahead and plan ahead so as not to be caught off guard when the time comes.

After all, countless powerful and unified dynasties have already given the answer.

Of all these things, the one that made him hesitate the most was tobacco, a miraculous plant known as acacia in China's Ming and Qing dynasties.

The hermit gentlemen of later generations naturally understand the meaning of this word, as long as you are addicted, it is really a veritable inch of lovesickness.

Lovesick to the bones, never forget!

As the two most common hermits in later generations, tobacco and high liquor.

He had already brought high-grade liquor into the lives of the Han people at the very beginning, and until now he has had to strictly control it in the form of laws to avoid flooding.

If wine can also promote the development of culture, it has given rise to countless magnificent poems and articles.

Then he really can't think of any positive role that tobacco can have in terms of culture.

The original purpose of the introduction of tobacco by later Chinese from missionaries was as a medicine, which was said to treat rheumatoid arthritis.

But now it seems that it is a pure lie, and it can only be said that it has a certain anesthetic effect.

Therefore, after thinking about it again and again, Liu Zhi decided to destroy the tobacco seeds, completely eliminating any possibility of this plant flooding in Dahan.

He gave Deng Yan a strict order, prohibiting any sailor from bringing tobacco leaves and seeds from South America back to Dahan, and if he violated, he would be killed.

This murderous order surprised Deng Yan, and of course he realized the seriousness of the situation.

Before he set off, although Liu Zhi listed some of the names of crops for him, Yin Yin instructed that all crops that could be eaten by the locals, whether useful or not, could be collected and returned first.

So he docked in South America for a few months, traveled almost all over the island, and collected all the seeds that might be useful.

Everything else has been vigorously praised by Liu Zhi, but the attitude towards tobacco is so different.

This also confirms Deng Yan's long-standing suspicions, our emperor is definitely not an ordinary person, he is too familiar with many new things, and he is so familiar that he has a weird feeling.

Especially after he arrived in South America this time, this feeling was even stronger.

After all the hardships and hardships of crossing the ocean, he firmly believed that there could be no one in this world who had ever been here before this.

So where does His Majesty's familiarity with South America come from?

Of course, he will never declare this question, let alone ask Liu Zhi, this secret can only be buried deep in his heart until he returns to dust.

However, Liu Zhi would not give him a direct order bluntly, but explained in detail the various characteristics of tobacco.

Even if there are small benefits to this thing, it will always do more harm than good, and human nature is the most untested thing in the world.

So simply from the very beginning, it was extinguished at the source, so as not to overflow and get out of control.

It's just that he also understands that since the maritime industry has developed, one day the distance between South America and Dahan will get closer and closer.

At that time, tobacco will still spread to the land of the Han Dynasty, but at least it will not be spread by his hands, and that will be enough.

In the future, after a hundred years, the dust will return to the dust, and who will care?

After listening to Liu Zhi's explanation, Deng Yan also felt the seriousness of the situation, and immediately knelt down and solemnly swore an oath.

"In his lifetime, he will never let tobacco poison the Han people."

Liu Zhi smiled slightly, "Get up, just know in your heart." ”

He absolutely believes in Deng Yan's character.

Next, Liu Zhi enjoyed some small gifts brought back from South America and the island countries along the way.

There are all kinds of things, there are jewels, there are carvings, there are fabrics, there are ores, there are also some strange knick-knaks.

It's so varied, it's everything.

Although along the way, there is no real civilization, but it does not prevent you from discovering some interesting things.

Even if you bring it back to see something strange, it's good.

Back then, when Zheng He went to the West, he once brought back a giraffe as a unicorn.

But soon Liu Zhi couldn't laugh at others, because then Deng Yan took out a picture scroll.

"Your Majesty, please see, these are all strange animals collected by the ministers, and several of them seem to be dragons from ancient legends."

Ryuko?

Liu Zhi was stunned for a moment, and looked over curiously with Deng Yan's instructions.

"Your Majesty, this thing is suspected to be a stump, nearly a foot long, weighing two hundred catties, it is said to have a long life and infinite strength."

This...... Isn't it a South American tortoise? The world's largest land tortoise, to give him such a description, is indeed a bit like a stumbling man.

"Your Majesty, please look at it again, this thing has a wide mouth, a long kiss, a full body of armor, and a fierce temperament."

This ...... Isn't it a big crocodile? It's a bit like a kiss.

Next, Liu Zhi saw many well-known "mythical beasts" from the drawings, such as cougars, alpacas, sloths, raccoons, and ......

For the people of the Han Dynasty, these animals are indeed strange-looking, not to mention that era, even now, many of these animals are still full of interest.

Well, it's far-fetched to associate them with ancient Chinese mythology, which is indeed a bit of a toothache.

But then again, who said they had to be named according to the rules of the afterlife.

Now the fact is that he was the first to discover these things, and according to the rules, then he has the right to name them.

It's not up to him to decide what the name is.

Thinking about this, Liu Zhi finally felt no longer embarrassed, anyway, China's history has been changed by him, and it doesn't matter if he changes world history.

The two talked all night, and after dawn, they were still unsatisfied, thinking of Deng Yanlian's years in Nanyang, it had been nearly ten years since he left his home.

So Liu Zhi gave him a vacation and let him go home to reunite with his mother and brother in order to fulfill his filial piety.

As soon as Deng Yan left, Princess Liu Hua of Anyang slipped out, and the two uncles and nephews had not seen each other for many years, but they had no sense of separation, and they were very affectionate.

Liu Hua pestered his uncle, chattering and asking questions, and was so envious of his various experiences.

Liu Zhi couldn't sleep here, and Yang Ci was not there, so he summoned Tao Zhao, another official in charge of agriculture, to come over and discuss with him the cultivation of new varieties.

Deng Yan carefully recorded the planting points of all kinds of seeds brought back, some of which belonged to tropical plants and needed to be sent to the manor in Yazhou for trial planting.

Of course, Liu Zhi is most concerned about corn, potatoes, sweet potatoes, and peanuts, which are the main food crops.

They are highly adaptable to soil and climate, can be grown in both north and south, and can be used as a bulk universal food.

"In addition to domestication and adaptation, the seeds brought back by Chengengong this time should also carry out the optimization and improvement of hybrid varieties.

There is no need to worry, even if it is ten or eight years, it is necessary to wait until the seed performance is stable before carrying out large-scale promotion. ”

"No."

Tao Zhao nodded again and again, he was the most outstanding agricultural science and technology researcher of the younger generation, although his qualifications and prestige were not as good as Yang Ci.

But in fact, if you only talk about knowledge reserves and research and development capabilities, he is much stronger than Yang Ci.

After all, when Yang Ci came into contact with agricultural science and technology, he was relatively old, and the traditional cultural education he received before shackled his ideological development.

Therefore, Liu Zhi's hopes for Tao Zhao are actually greater, maybe in his generation, he can drum up hybrid rice and wheat.

In that case, even if there is a population explosion in the future, there is no need to worry about not being able to feed them.

"Those vegetables and fruits, plant some of them first and give them to me to try."

Some of these vegetables are commonplace in modern times, but in the Han Dynasty, he almost forgot what they tasted like, and he really missed them a little.

"This rubber tree, I want to send it to Yazhou, explain it to Dean Yang, and say that I said it, and I will plant it in large quantities immediately, and I will have a wonderful use."

Rubber plays too much of a role in industry, and the most basic is the tire, which can effectively reduce the bumps of the carriage.

No matter how beautifully crafted the solid wood wheels of this era, no matter how thick the upholstery in the carriage is, the feeling of bumps cannot be abated.

It makes long journeys and outings not feel so good, but rather a kind of torture.

Natural rubber has the characteristics of strong elasticity and good insulation, plasticity, water and air insulation, tensile and wear resistance.

The places that can be used are too wide, and they are used in industry, weapons, transportation, medical equipment and daily life.

For example, all kinds of tires, sealing rings, rubber pipes with good sealing performance, isolation equipment and so on.

The rubber tree is full of treasures, its seeds can be extracted for oil, used as raw materials for paint and soap, and rubber husks can be used to make charcoal.

Moreover, the wood of the rubber tree is delicate and dense, and the material is light, which is also a good furniture material.

It's a pity that it takes at least a decade to go from seed to mass propagation, to reach the required amount, and to mature enough to be able to tap rubber.

This is still the most optimistic estimate, if there is a slight problem in the middle, it will take one or two decades, which is too long.

No way, rubber trees are perennial trees, and it takes seven years from planting to rubber tapping, not to mention that there is a process of propagation and expansion in the middle.

The only fortunate thing is that because Liu Zhi has given a special explanation, Deng Yan also attaches great importance to this matter, so the seeds of rubber trees are collected more.

This allows you to breed a large number of seedlings from the beginning and not wait for the first trees to mature before expanding.

"Except for Yazhou, Jiaozhou, Yunzhou, Fuzhou and Yizhou, the climate is relatively similar, and it should also be suitable for planting."

Tao Zhao listened to Liu Zhi's instructions, and kept recording them on paper, so as not to miss the key points by himself.

He can be said to admire this knowledgeable emperor, and it turns out that his words are the golden rule, and they have been confirmed every time.

Sometimes he always thinks that even if His Majesty did not ascend the throne at the beginning, his light will not be overshadowed, and he must be the most dazzling existence in this world.