A long time ago, when Cao De was only a general of Anxi, when Cao De returned to the Han Dynasty from the grassland after attacking the royal court of the Huns, Cao De once went to Yanmen Pass.

There, Cao De found Zhang Liao and a group of descendants from Rome. At that time, Cao De already had the idea of getting in touch with Rome, which was as powerful as the Han Dynasty in the same century.

And it wasn't until six years ago, after Ding Chong integrated the Western Regions six years ago to establish the Western Regions Protectorate, that the team ordered by Cao De set off.

Exactly six years, and they're back! But when they went, there were 3,000 people, and when they came back, there were only 14!

This price should not be said to be huge, but should be huge. However, they also brought back some of the things Cao De needed.

For example, some novel foods, carrots, cucumbers, sesame seeds and so on. Of course, there are some other things, among which is the glass that Cao De longs for the most!

When Cao De was playing with a piece of glass that was already very transparent, Jia Xu walked over with a frown, "When did the prime minister dare to be interested in this thing?" ”

Cao De was stunned, "What?" Wen and know it? Immediately, Cao De had a little crooked thought, "What is Wenhe?" ”

Jia Xu was stunned by Cao De's words, and then said: "How can you not know! This thing is not common in my Han Dynasty, but it is not a rare thing. A few days ago, some of the top products produced in the official kiln in Chengdu have been sent to the Prime Minister's Mansion, what's the matter? The prime minister doesn't know? ”

Originally, Cao De still wanted to test Jia Xu, but he was taken aback by Jia Xu's words.

Why did I send someone to travel hundreds of thousands of miles to bring back the things that I had in my own home? What about teasing me?

Jia Xu looked at Cao De's surprised face, smiled slightly and said, "This thing is called Liuli." It is sometimes produced in the official kilns and private kilns where I fire porcelain. I don't know why it was produced, but this piece of glass in the prime minister's hand, although it is larger, has no color embellishment, it is too second! ”

"Ruri! It's actually glass? Cao De muttered, "And it's still a defective product?" ”

In Cao De's view, its transparency is already the top grade, but in the eyes of the family, it is the most inferior product. Where is the reason?

Why does Cao De want glass? In fact, as early as the last time the plague caused by the Huns, Cao De was like building a simple microscope for Hua Tuo and Zhang Zhongjing to see the tiny world. Thus, creating a pre-stream.

And this matter, in Cao De's opinion, even if he told Jia Xu, they wouldn't be of much help, they didn't understand. Therefore, when looking for materials, it has always been Cao De himself who acts. And this is naturally to ignore the glass that is often seen in Cao De's mansion. At first, Cao De thought it was a treasure, and glass was also a kind of treasure. But Cao De never thought that the glaze was actually an accessory to fired porcelain.

It's a big joke.

After Cao De rewarded the warriors who had returned from Rome, he handed over all the seeds they had brought back to Gao Shun, who was in charge of the construction corps. And Cao De himself was focused on the glass and the microscope.

Finally, after not knowing how much glass was broken and how much manpower and financial resources were wasted, the concave and convex mirror was made out by Cao De! And after that, Cao De immediately built a telescope! When Jia Xu took the telescope that Cao De put up in a bamboo tube and clearly saw the situation a few miles away, Jia Xu exclaimed in surprise: "It's amazing! ”

After that, Cao De once again threw himself into the production of the microscope. Finally, after five months, Hua Tuo saw a moving creature from a drop of pure water. "Lao Zhang, Lao Zhang, come and see what this is."

At first, when the plague was rampant, Cao De also planned to go to Hua Tuo and Zhang Zhongjing's research center, trying to use some memories of his previous life to see if he could help. But it turns out that Cao De is just a guy who can help.

You said that Cao De went, such a big official, he had to salute and serve tea. Finally, when Cao De was "shameless to ask", he delayed time. So, when the "decoction" was taken out, it became a medicine cake. And Cao De was jointly blasted out of the institute by the angry Hua Tuo and Zhang Zhongjing. Cao De remembers very well that he was embarrassed to even raise his head that day. And now, the two old fellows were holding one of their arms and asking what it was.

So, Cao De "taught" the little biological knowledge he had in his stomach to Hua Tuo and Zhang Zhongjing. And Cao De only regrets it now, why didn't he read more books and memorize more things in his previous life. Even if it's a fork, it's easy to use!

Now that he has the help of the microscope, the vaccine that Cao De was going to propose before can also be officially announced. However, at present, Cao De's understanding of vaccines is only what vaccines look like and what vaccines are used for, as for how to make vaccines, Cao De does not know, let alone the key to making vaccines. So, Cao De hurriedly took advantage of the two old men in a daze to run out of the research center, otherwise he would be kicked out again, and he would really not be able to hang up.

From the thirteenth year of Jian'an to the seventeenth year, these four years. Han China's door to the outside world has never been officially opened. Every time, Cao De just sent people and didn't go far, and the people came back with a hula and a cheer.

"Prime Minister, the plague is rampant outside!"

Since there's a plague outside, let's continue to play at home. After a few years of hard work, no matter how Liu Bei jumped, he couldn't be as strong as himself.

In the past four years, carrots and cucumbers from the Construction Corps have become essential foods for every household. High yield, good taste and high nutrition. It can be used as a fruit, it can also be used as a vegetable, and it can be eaten as a meal when you are in a hurry. What a good thing.

And the most corrupt is actually Cao De. In fact, Ding Chong's mission brought back a variety of spices and condiments the most. In this way, Cao De's dinner table is more complete in color and flavor.

The most shameless Zhang Fei, Zhang Liao and Gan Ning, since they had a delicious meal at Cao De's dinner table, they directly stayed in Cao De's prime minister's mansion and didn't leave. In the end, Cao De still sent someone to fork out this thick-skinned guy. Before leaving, I didn't forget to stuff another sip of the fragrant food.

In the past four years, Cao De's army has not been idle. Although in the past four years, Cao De has never heard of the news that the plague in Dahan is intermittent, but the plague in Han China has only occasionally occurred in 100 cases. Therefore, all this did not affect Cao De's military training at all.

Military exercises, confrontations, learning, and training have been played in the style of Cao Dehua.

And the black pearl that Cao De was most worried about, Cao De finally made up his mind. Now, there was a thin figure by Spicer's side, and this skinny figure was only compared to Spicer. And Spice also understands that his master seems to be a little worried about himself. But what Spice meant, according to Cao De's understanding from the successor, although Spice Ruo was a little repulsive, he was still trying to accept it.

In any case, on the surface, Han China cannot be said to have made great progress in recent years, nor can it be said that it can only be maintained, but the ordinary and ordinary have not regressed. As for the situation outside Han China, we have to investigate and investigate ourselves.