Old Man Qin was very cautious, and after asking Jin Yu questions in detail, he sent twenty powerful generals to follow Jin Yu home and temporarily act as Jin Yu's personal guards.

sent Jin Yu away, Old Man Qin was not idle, changed into an official robe and went to the palace.

Old Man Qin hadn't been so excited for a long time, and he hadn't even been so happy with the old man. My son-in-law is angry! Which thing is not shocking and beneficial to the country and the people? Although he is not his own son, it is not bad to be a son-in-law, don't say that there is a life-saving grace, even if there is none, it is not a loss! Gui Tang is a person who values feelings and misses the old, even if he is a hundred years later, I believe that he can treat the children of the Qin family of Huaiyu's generation well.

Second Master Li has been a lot haggard recently, and he has to keep filial piety day and night, make some salutes according to etiquette, cry twice, and take the time to review the folds or something. Although he let his son take over the supervision of the country, he is too young, has limited knowledge, and has limited political wisdom, and he still has to check many things by himself. Cheng Qian's acceptance of the great gift from the envoy of the Japanese State Li Erye also knew that the Tang Dynasty did not fulfill Cheng Qian's intentions, and he also knew that he was just pretending not to know, after all, it was all a trivial matter, and it had nothing to do with the country.

To be honest, in this matter, Gui Tang is not a big mistake, but after fighting the face of the heavenly family, it is a little unbearable for Li Erye, but the folds handed over by Gui Tang a while ago have been made very clear, and he is also doing this to prevent foreign countries, how can he also do things from the perspective of Datang, so it is better to hand over these small things to Cheng Qian to deal with by himself, and it can be regarded as a test for him.

Of course, as the crown prince appointed by Li Erye, after the imprisonment of the country, it is still necessary to give a reward, "like yourself", this reward can be very demagogic, Li Chengqian's face turned red when he heard it, and he was quite encouraged. Playing with Second Master Li is still a little tender!

When Old Man Qin came to see him, Second Master Li was summoning the eldest grandson Wuji to discuss the matter, and the eldest grandson Wuji wanted to avoid it, but Second Master Li didn't allow it, so he had to sit in the position to listen.

"Qin Aiqing, what's the matter? Can it be worth your run on a hot day? "Second Master Li is really good to a group of old brothers, especially these subordinates who helped him rise to the throne in the first place, and there are not many times to be harsh.

"Your Majesty, it is my son-in-law who has recently come up with a way to prevent measles, and those who plant pox in advance can not get infected with the disease when measles is raging." Qin Qiong didn't have time to wipe her sweat, and eagerly explained the reason. Although it is early summer, Qin Qiong's title is ranked first, and the face saint needs to be dressed in a purple robe. At noon, the sun is poisonous, the purple robe is dark, and it is strange not to sweat all the way down in the palace!

"What?" When Second Master Li heard this, how could he still sit still? It jumped up at once, and the inkstone on the royal table was touched without noticing.

"Gui Tang has recently reproduced the good prescription of his people, which can effectively prevent measles, as long as the pox is planted in advance, there is no risk of smallpox rampant." Beads of sweat flowed down her cheeks, and Qin Qiong explained to Second Master Li again, and secretly wiped her face.

"How much does it cost? Is it troublesome? Since it was a method that Jin Yu came up with, Second Master Li didn't even ask if the effect was true, and directly asked about the key point.

According to Gui Tang, large-scale promotion, each person needs only two or three pennies to plant pox, and the operation is simple, which is less troublesome than boiling medicine, as long as you draw a small hole on the shoulder and apply the powder. It can heal itself in three or five days, and after self-healing, there is no fear of measles. The only trouble is that this method needs to be replanted every five years. Qin Qiong told Second Master Li what he inquired about from Jin Yu, on the issue of cost, Qin Qiong consciously multiplied more than 200 times on a small-scale basis, and couldn't let well-wishers suffer, right? What's more, this kind man is his son-in-law?

"Yi Guogong, this method may have been verified? Is it really as effective as Gui Tang said? "The eldest grandson Wuji was originally given to sit, and after hearing Qin Qiong's words, he also stood up in shock, this method is too shocking, making people instinctively doubt its reliability.

"Back to the official words of Qi State, Gui Tang Zeng said that this method has been used in other ethnic groups for a long time, and has not been found to be ineffective, and his people have never had a case of measles infection after pox. According to Gui Tang, this kind of pox method will not cause other complications, and there is no one in 10,000 who die due to pox. Gui Tang is very confident, and he thinks it will be effective. Qin Qiong is full of confidence in Jin Yu, what thing did her son-in-law do not surprise her? What's not an eye-popping thing to do afterwards?

"Someone! Look! Second Master Li was really excited, summoned the eunuch to show Qin Qiong, and carefully instructed the eunuch: "Shaved ice, shaved ice for Yiguo Gong!" ”

"Thank you, Your Majesty!" Qin Qiong was busy thanking, this treatment is not something ordinary people can have. There aren't many things, but after all, it means that the emperor has you in his heart, doesn't he? Just like the Danshu iron coupon that Jin Yu never forgets, this is a symbol of status!

"Hahaha! Aiqing has a good son-in-law! Li Er Ye couldn't help but be overjoyed, this news made Li Er Ye more excited than anything Jin Yu had tinkered with before.

In the later generations in which Jin Yu lived, there was a saying that "talents are more precious", and there was also a saying of demographic dividend. After six years of Zhenguan, it is difficult to find talents, but the population is an iron thorn that makes Li Erye choke in his throat!

Since the fourth year of Wude, he began to revise the "Book of Sui", although it has not been sorted out yet, but some of the data is already very detailed, and there are nearly 8.91 million households and 46.02 million people in the five years of the great cause! On the other hand, there are 2.19 million households in Wude in seven years, and only 10.2 million people! The population has plummeted by 75%! With this, how to justifiably call the prosperous world? Lack of confidence!

There have been no major wars in recent years, so it is not possible to say how many people died in battle, but more because of disease and starvation. At the beginning of Li Erye's tenure, he further consolidated the position of the Juntian system, trying to create a prosperous era where everyone had food to eat and was not hungry, however, when he was not hungry, he never found a good way to deal with plague and measles. Jin Yu's method was born, but it really tickled Second Master Li's flesh. If it can be implemented, it will directly eliminate the population decline caused by measles.

"Congratulations, Your Majesty!" Seeing that Second Master Li had already believed it, the eldest grandson Wuji came up and patted him on the back, "If this method is feasible, the prosperous era is not far away, and it is just around the corner." However, in Weichen's humble opinion, it is more appropriate to verify it, and if it is true, the implementation will be smoother. ”

"Exactly! Hahaha! Verification must be verified, but Second Master Li has already believed seventy percent in his heart, and once again praised Jin Yu, "Dear Aiqing has a good son-in-law, I envy it, hahaha!" ”

I'm envious too! The eldest grandson Wuji thought darkly, why don't I have such a good son-in-law?