After breakfast that day, Prince Xiao wrote a letter in his tent.

The letter was addressed to Hanaki Jun.

There was nothing else in the letter, it was nothing more than describing to her the trivial matters of his days.

In the letter, he mentions Aoeda and says that she has recommended him to a good doctor.

In the letter, he said that there was a good doctor in a unit who was needed in the most important part of the war, something he had not been aware of before.

was writing a letter, when suddenly a Tang newspaper cavalry came to report: "Your Royal Highness the Prince, Zhou Jing's side should already know your strategy!" ”

Prince Xiao put down the pen, looked up from the letterhead, and asked, "How can you see it?" ”

Natang Bao Cavalry Road:

"When we were patrolling the riverbank this morning, when we stood on the trees and looked at them, we saw that there was no one in their tent to train today, whereas they used to train in turns, but today they all avoided their tents."

After pondering for a moment, Prince Xiao asked, "Then can you find out how many patients they have now?" ”

"Judging from what we've heard in the pharmacies these days, the total number of patients they have now is about five thousand to seven or eight thousand. ”

When Prince Xiao heard this number, his brows tightened, and he said, "Okay, you guys continue to inquire about the news, and if you have any questions, come and report them in time!" ”

"Yes." The cavalry bowed down and walked out of the tent.

After the Tangbao cavalry left, Prince Xiao shouted outside the tent:

"Martial arts!"

"His Royal Highness the Prince, the little one is here." Wu Shu answered outside the account.

"You go and ask Dr. Kong to come over, and ask him something important." Prince Xiao coughed a few times and said.

"Yes, His Royal Highness the Prince." Wu Shu hurriedly went to Qingzhi's tent to ask Qingzhi.

When Wushu went, Qingzhi was reading a medical book in his tent, and when he heard that His Royal Highness the Crown Prince had something important to look for him, he hurriedly put down the medical book, wrapped up the gauze covering his mouth and nose, and walked to Prince Xiao's tent with Wushu.

When he arrived at the tent of His Royal Highness the Prince, he saw His Royal Highness the Crown Prince sitting solemnly at the table in his tent, his slender fingers tapping on the tabletop, making a rhythmic tapping sound.

Qingzhi listened to the knocking sound, and said in his heart, His Royal Highness the Crown Prince probably has some doubts.

"His Royal Highness the Prince, do you have something to do with the grass people?" Qingzhi asked after a bow.

His Royal Highness the Crown Prince stopped tapping and said, "Doctor Kong, you help me calculate, if in a place like the army, when the number of sick people reaches about seven or eight thousand, and the isolation starts immediately, how many days will the number of patients reach its peak?" How much will it end up in? ”

What he is most worried about is that his side of the plan has been guessed by the other side, so isn't it in vain for so many days?

In order to control this side and start the war at the most favorable time, he first cut off the route from that side to here, ordered people to destroy the surrounding bridges, and ordered people to build ships overnight, so far, 6,000 ships have been built.

He also ordered people to buy all the shipbuilding tools in the vicinity, because he was afraid that they would try to pass through the ships.

While all this was going on in an orderly manner, quarantine actually began over there.

If the number of sick people does not reach more than half, only 20,000 to 30,000, then they will be busy all these days.

Qingzhi didn't know about this strategy in the army, so he was a little surprised by this question from Prince Xiao.

After a rough estimate, she said to His Royal Highness the Prince:

"Seven thousand today, even if we start quarantining now, I am afraid it will reach one to twenty thousand tomorrow, three to forty thousand the day after tomorrow, and seventy or eighty thousand the day after tomorrow. If the number of people in the army is more than 100,000, it will only take a few days to reach 70,000 or 80,000, but it will not continue to increase, because there will be a kind of herd immunity. ”

"Herd immunity?" Prince Xiao glanced at Qingzhi in surprise, a word he had never heard of.

"When more than half of the number of people is sick, there is a kind of herd immunity, that is, those who are sick form a protective barrier so that those who have not yet become ill will not get sick again, and this is the reason why no infectious disease can completely extinguish a species," Aoeda explains. ”

Prince Xiao said: "So you mean that in the case of 7,000 patients, there will be 70,000 to 80,000 in the day after tomorrow, and then the number of sick people will slowly decrease, and the others will no longer get sick?" ”

"Yes, His Highness the Prince."

"In this way, the day after tomorrow is the best time to attack the enemy." His Royal Highness the Crown Prince said in deep thought.

"Attack the enemy?" Qingzhi was stunned.

"Well, Lone has already discussed with the others, using this method to make half of the enemy sick, and then attack them while they are weak."

Qingzhi didn't know what to say for a while, but she understood that His Royal Highness the Crown Prince must have his reasons for doing this.

His Royal Highness the Crown Prince seemed to understand what she was thinking, and said: "This idea was not thought up by Gu herself, it was a strategy offered by the Imperial Doctor to Gu Gu, and after everyone discussed it, they agreed that this could quickly destroy the enemy and allow the people to return to their homes earlier, so they had to use this plan as a last resort." ”

Qingzhi said: "His Royal Highness the Crown Prince is thinking of the common people in the world and using this plan, there is nothing wrong with this. ”

His Royal Highness the Crown Prince smiled slightly and said, "Does Dr. Kong regard His Royal Highness the Crown Prince as a shameless villain?" ”

Qingzhi hurriedly said: "His Royal Highness the Crown Prince is serious, in the eyes of the grass people, His Royal Highness the Crown Prince has never been a shameless person. Just now, the grass people only had a slight doubt in their hearts, but now that the doubts have been solved, they only have admiration for His Royal Highness the Prince. ”

Prince Xiao suddenly changed the topic: "By the way, how is Gongzi Lu these days?" Because he had seen too many people before, and he had been a little unwell in the past few days, he did not dare to visit him, for fear that Gu Ruo would also be infected with a disease that would infect him and put him in danger. ”

Qingzhi said: "His Royal Highness the Crown Prince can rest assured, Lu Gongzi can already move on his own now." ”

"Well, it's all lonely, you can go back." His Royal Highness the Crown Prince began to write something.

"Yes, His Royal Highness the Prince."

.

Over the next two days, the Daily Tang Bao cavalry sent to His Royal Highness the Crown Prince about the number of patients detected each day, which was roughly the same as the number of patients on the other side estimated by Aoeda.

The number of patients on my side is getting smaller and smaller, and only a few more people are increasing every day.

On the third day, His Royal Highness the Crown Prince summoned the privy envoy Qin Qiming, Ma Xiao in front of the palace, Ma Bujun commanded Shi He Shouxin, Ma Jun commanded Shi Gao Muyuan, commanded Shi Guo Haoming, Hanlin Bachelor Cheng Zhi Lin Taoyin, and the army general champion Grand Prize Army Qin Shi, Guide General Zuo Jiang, and several other generals held a pre-war conference in the Chinese army's big tent.

At this pre-war meeting, His Royal Highness the Crown Prince ordered Qin Shi, the champion of the Grand Prize, to lead his troops to start setting off for the bank of the Yin River early tomorrow morning, and then arrive at the opposite bank by boat to attack the camp where the opponent was located.

On the eve of the war, the tent was quieter than ever.