The strong man looked at the well-dressed young man in front of him, a little confused, and thought to himself: Shouldn't you have met a madman?

This time.

Seeing that the strong man didn't speak, Li Si raised his voice again and said, "Just show me your cow, and I'll give you five hundred taels!" ”

After speaking, he looked at the shadow guard beside him, and said in a slightly hurry: "Take five hundred taels out." ”

“......”

At this moment, not to mention a strong man, even the shadow guard felt a little speechless.

It's just two cows, as for the excitement like this?

If they hadn't been following Li Si all the time, and seeing his actions, they would have thought he was a madman.

Although they thought so in their hearts, when they heard Li Si's order, they still took out the silver from their arms and shook it in front of the strong man.

"Can you really take out five hundred taels?"

The strong man was slightly stunned, and said in his heart, I didn't expect to meet a rich man.

After thinking for a few seconds, he nodded and said, "I can show you, but only you." ”

Seeing him agree, Li Si looked excited, and was about to nod, when he suddenly heard the voice of the shadow guard behind him.

"No, at least one person has to follow."

When Li Si heard this, he glared at the shadow guard, and his expression became even more anxious.

What if you anger people and they won't let you see it?

The strong man glanced at the shadow guard and felt that he should not be any threat alone, so he nodded and said, "Okay." ”

Thereupon.

Li Si and a shadow guard followed the strong man into the mansion.

After walking a few steps, I saw a straw shed in the yard, and in the grass hut there were two cows lying quietly on the ground, looking listless.

"I don't know what's going on, these two cows have been like this for more than half a month, like they are sick, and they don't know what the disease is."

The strong man looked at the two cows, sighed, and said.

Li Si didn't reply, but walked up to the two cows, looked at a certain place of the cows, and carefully observed them.

“......”

When the strong man saw this scene, he was completely stunned.

Sure enough, it's a crazy heart, staring at the place where the cow feeds the cubs?

Not to mention the strong man, when the shadow guard saw this scene, he also showed a helpless look.

For the first time in so many years, he felt that it was so humiliating to carry out the mission.

He wanted to stop Li Si and tell him to stop looking.

The words were blocked in my throat, and I couldn't spit them out.

Seeing that Li Si became more and more energetic, he finally gave up struggling.

Let him be.

After leaving Yan Kingdom, no one knows what he has done.

Thinking like this, he suddenly heard Li Si's voice that he couldn't help himself!

"Found it! Got it! Finally found it! ”

Li Si almost jumped up, and came to the shadow guard in a few steps, grabbed his hand, and said in a trembling voice: "We found it!" ”

Ying Wei subconsciously wanted to struggle, but when he saw Li Sitong's red and tearful eyes, he was stunned and let him drag him.

When the strong man on the side saw this scene, he was almost certain that the person in front of him was crazy!

"Five hundred taels of silver, buy your two cows, do you sell them or not?"

After a while, Li Si's mood calmed down a bit, looked at the strong man on the side, and asked.

When the strong man heard this, he fell silent.

Just when Li Si thought he was going to refuse.

The strong man suddenly spoke: "These two cows have been with me since I was a child, and I take them with me wherever I go, and in normal times, I am even reluctant to let them plow the land. ”

The appearance of emotion made Li Si slightly stunned.

He thought for a few seconds and asked, "So it's not for sale?" ”

The strong man shook his head and said, "No! Gotta add money! ”

“......”

Li Si was silent for a few seconds and said, "Eight hundred taels!" ”

"Deal!"

In Yan Kingdom, a young and strong cow can generally only be sold for thirty or forty taels.

The price of breeding cattle is higher, but it will not be higher than 100 taels.

Therefore, these two cows can buy a maximum of two hundred taels.

Eight hundred taels of silver is already a sky-high price.

Seeing that the strong man agreed, Li Si looked at the shadow guard and ordered, "Take out 1,300 taels and give it to him." ”

"Yes!"

Regarding the matter of taking silver, the shadow guard did not have the slightest softness.

After all, these silvers were handed over to Li Si by Fang Xiang and left him at his disposal.

As long as the spread of the plague could be stopped, even if Li Si took the silver and bought two sick and dead cows, they would not have any opinion.

As for why, as soon as he entered the city, he was reluctant to give the old man more copper plates.

Simply because those copper plates are the Shadow Guard's own.

"One thousand three hundred taels?"

The strong man looked at the silver in front of him, his eyes widened, and he was a little incredulous.

How did the negotiated 800 taels become 1,300 taels?

The shadow guard on the side seemed to see his doubts, and mentioned in passing: "This is the silver for watching the cow." ”

"Look at the cow, it's really five hundred taels!"

When the strong man heard this, his eyes looked at Li Si differently.

Although this is a madness, but the level of kindness is unmatched by no one in the world!

Thinking like this, he saw Li Si beckoning the guards behind him and leading the two cows out.

Both cows were a little in poor spirits, but they obediently followed the guards.

No way, I had an iron ring on my nose and had to follow.

That's it.

Li Si and Ying Wei led the cow and came to the outside of the city.

Later, he rented a mansion outside the city with the money and lived in it.

"Cowpox, what cowpox!"

In the mansion, Li Si took out the book that recorded cowpox, carefully compared, and finally confirmed that this was what he was looking for!

】

After calming down the agitated emotions.

He looked at the shadow guards on the side and asked, "Which of you would like to be vaccinated with cowpox?" ”

Several shadow guards stood in place, none of them speaking.

Seeing this, Li Si said, "Those who are vaccinated with cowpox will be given five hundred taels of silver." ”

As soon as this remark came out.

Li Si obviously noticed that the atmosphere in the mansion had become different.

"Master Li, we have been instructed to assist you in finding a way to stop the spread of the plague, as long as you can complete the task, we are willing to give our lives, these are already ready to enter the first village, you don't need to pay an extra one or two silver, you still keep these silver, buy a few more cows."

The leading shadow guard stood in front of Li Si and said in a calm tone.

When Li Si heard this, he was stunned at first, then realized something, showed shame on his face, and apologized to the shadow guards: "I was found to be dizzy by cowpox, and I said the wrong thing, several of them are people who believe in Ren, follow Fang Xiang from birth to death, and the silver is like dung in your eyes, and I am insulting you when I talk about the silver." ”

"If it weren't for you, I would still have this smelly silver, and I wouldn't be safe and sound to this day, and I'm dizzy......"

"Master Li doesn't need to say much, we all understand."

The leading shadow guard opened his mouth to interrupt Li Si, and said with a straight face: "As long as it is beneficial to the task, we will all obey unconditionally, but before that, I don't know if we can know what vaccinum is?" ”

"Absolutely!"

Li Si nodded heavily, stood up, and explained to the shadow guards: "This cowpox is a kind of insect and disease on the cow's body, as long as it comes into contact with this disease, it will be infected, but this disease is equivalent to a cut, and for most people, it is an insignificant thing.

However, as long as you are infected and come into contact with the plague of smallpox, you will not be infected with this plague again, and this is the best way to stop the spread of the plague! ”

When the shadow guards heard this, their faces suddenly changed.

The leading shadow guard said: "Thank you Lord Li for your doubts, then please Lord Li vaccinate us with cowpox." ”

Li Si waved his hand and said: "After all, no one has ever been vaccinated with cowpox before, so for the sake of caution, it is best to ask someone to try it first, and if there is no big problem, then vaccinate this cowpox together!" ”

When the leading shadow guard heard this, he nodded, looked at several shadow guards, and casually nodded to one of them, and said, "You go." ”

"Yes!"

The shadow guard nodded, and stepped forward.

Li Si used a special needle to pick through the cow's pox, and then pricked the shadow guard's arm with the needle.

"In the next few days, we will stay here, don't go anywhere, and when the results are available, we will return to Nanwangfu immediately, and then return to Daqian with these two cows!"

After Li Si inoculated the shadow guard with cowpox, he looked at the rest of the shadow guards and ordered.

"Yes, sir!"

Several shadow guards saluted in unison.

The next few days.

Li Si recorded the physical condition of the shadow guard every day.

Nine days after he was found, he developed a rash on his arm, but it was not serious.

In addition to this, the body temperature has also risen, but the number has remained below 38.

When I asked me again what was uncomfortable, I got no answer.

Just in case this is just an isolated case.

Li Si inoculated the other two shadow guards with cowpox.

After waiting for half a month, I found that the symptoms were similar, all mild.

During this period.

Li Si sent Yingwei to buy three cows nearby, and planted cowpox on them to infect the cows.

Next, he took the three cows all the way south and returned to Nanwangfu.

Came to the mansion that I had rented.

As soon as I entered the door, I saw the shadow guard washing the veil in the courtyard.

"Brother Zhao, what about them?"

Li Si looked at the shadow guard and asked.

When Ying Wei saw Li Si, the heart that had been hanging finally fell, and said: "They are all resting in the house, some time ago, he also contracted a disease, but fortunately he survived." ”

As he spoke, he took out the booklet from his arms, handed it to Li Si, and said, "This is a record of the humiliation, and during this time, the three of them have symptoms. ”

Li Si reached out and took the booklet and read it from top to bottom.

After a moment, he nodded and said, "You did a good job, and the record is very detailed." ”

Whether it was the symptoms recorded in the booklet, or what he saw and heard along the way, it was certain that the plague spreading in the Yan Kingdom was the smallpox recorded in the book!

It was determined that the disease was smallpox, and cowpox was found.

There is no doubt that his trip to Yan Kingdom can almost be said to be perfect!

Next, he has one more thing to verify.

He looked at the shadow guard who stayed in Nanwang Mansion and ordered, "Pack your luggage and go home in the next few days." ”

"Yes!"

The shadow guard answered.

Then he asked, "Zhao Sheng, how to deal with them?" ”

When Li Si heard this, he fell into thought.

This time.

Zhao Sheng, who heard the movement, walked out of the house, looked at Li Si, and said, "The three of us have recovered from our illnesses, and I don't know if Brother Li can take us to Qianguo together." ”

As soon as this remark came out.

The whole courtyard fell silent in an instant.

Behind Li Si, several shadow guards had already pressed their hands on the hilt of the knife.

Zhao Sheng noticed the gradually tense atmosphere, and hurriedly explained: "Brother Li is from Qianguo, you can hear it from the accent, it's not that you want to explore anything, as for why you want to follow Brother Li to Qianguo, it's really because I stay in Yan Country and I don't know where I'm going."

The hometown has been occupied by the Euro people, and I am afraid that I will not be able to go back for a while, so it is better to follow Brother Li to Qianguo, use some of the capital saved, open a medical center, and continue to do the original business to diagnose people. ”

When Li Si heard this, he fell silent.

After a while, he nodded and said, "Okay, I can take you back to Qianguo, but after you arrive in Qianguo, you must follow the rules and live in the border for three months, and if nothing happens, you can go to the nearby Fucheng." ”

"Good!"

Zhao Sheng saw Li Si agree, his face was happy, and he nodded heavily.

Then.

Li Si looked at the three shadow guards behind him who had been inoculated with cowpox, and instructed, "In the next few days, you will wander around the neighborhood and meet people infected with smallpox, so get as close to them as possible, and try to get smallpox as much as possible. ”

Side.

When Zhao Sheng heard this, he was a little confused.

I thought, what's the matter with this Brother Li? Is this an attempt to bring the plague back to Qianguo?

Just when he was puzzled.

I heard Li Sidao again: "After thinking that you will probably be infected with smallpox, you will set off to go back, and then find a place where no one will live, live for half a month, and truthfully record the daily changes in your body and hand it over to me!" ”

When the three shadow guards heard this, they immediately understood the purpose of the task given to them by Li Si.

It is to let them verify whether they can resist this plague called smallpox after vaccination, and if they can resist it, everything recorded in the instructions is fine.

The next step was to inoculate cattle with cowpox on a large scale, and then to inoculate them on humans to stop the spread of the plague.

Therefore, without the slightest hesitation, the three shadow guards bowed their hands and turned to leave.

Li Si stood in place, watching the three of them drift away, his eyes bursting with a bright light full of hope.

I hope the three of them can return safely!

All the best!

Thinking so, he looked at Zhao Sheng and said, "Brother Zhao also go back and pack your luggage, and we will leave immediately and return to Daqian!" ”

"Good!"

Zhao Sheng nodded, turned around and went back to the house, and began to pack his luggage.

Li Si came to Yan Kingdom for a month, finally completed the expected goal, and began to return.

Compare to when it came.

In addition to the loss of some silver, there were three more men, and five oxen.

............

Now.

Chang'an, which is not too far away.

In the palace.

Wu Mingkong was holding the finished astronomical telescope sent by Shen Miao and looking at it curiously.

Side.

Shen Miao is a rare well-behaved, quietly waiting.

I don't know how long it took.

Wu Mingkong put down the astronomical telescope in his hand, looked at Shen Miao, and praised him sincerely: "He is worthy of being a great engineer in the future, and he has done a good job!" ”