Chang'an City has been martial law and is allowed to enter and not leave, but this ban is naturally invalid for Li Xiu and the others. When He Panren took out Li Shimin's warrant, the guard of the city gate quickly opened the city gate. Then Li Xiu and his group entered the city. Princess Pingyang originally had her own princess's mansion in Chang'an City, but she usually doesn't like to live there, so the mansion is always empty and there are special people to take care of it, so people can live in the mansion at any time.

Originally, He Panren also proposed to invite Li Xiu and his parents to live in the palace. This was what Li Shimin had ordered him before, but Princess Pingyang did not agree. Although the palace was safer, the princess city in the city was also very cautious and not much worse than the palace. In addition, Princess Pingyang did not want to see Li Shimin at all, so she did not agree to this proposal.

However, Princess Pingyang did not enter the palace, but Li Xiu wanted to enter the palace to ask about smallpox this time. Not to mention anything else, Wan Tianhua's epidemic is really uncontrollable. I am afraid that he and his family will be in danger, especially his two sons. After all, no matter what your identity is, no matter whether you are princes and nobles or beggars on the street, the mortality rate after being infected with the plague is about the same.

So after Li Xiu handed over the affairs of his family to Princess Pingyang and the others, he immediately took Sun Simiao to the palace. At this time, the news of the explosion of smallpox had been spread. After all, the entire Chang'an City was already martial law. If you sneeze on the street, the Jinwu Guard would immediately take you away and isolate you, so such a big news cannot be hidden at all.

However, this news has also caused some chaos in Chang'an City. For example, there are people buying grain everywhere outside the grain shop, and the price of grain in Chang'an also rises three times a day, but even so, it still cannot stop people's enthusiasm for purchasing, because everyone knows that if they don't buy it now, the price of grain will only be higher in a few days.

After passing through the somewhat chaotic streets of Chang'an, Li Xiu's carriage finally came to the imperial city. When he and Sun Simiao met Li Shimin, they found that he was discussing affairs with several ministers, and these ministers were all acquaintances of Li Xiu, namely Changsun Wuji, Fang Xuanling, Du Ruhui and other old people from the original Tiance Mansion.

"Li Xiu, you and Taoist Master Sun came just in time. The smallpox epidemic is coming in full force, and Qingtian County is too close to Chang'an. I am worried that the epidemic will spread to Chang'an. You are all famous miracle doctors in the Tang Dynasty. Is there a way to cure smallpox?" Li Shimin saw Li Xiu and the others coming in, and immediately raised his back and asked, with a little hope in his eyes when he looked at them.

However, when Li Xiu and Sun Simiao heard this, they looked at each other and smiled bitterly. Finally, Li Xiu stepped forward and confessed: "Your Majesty, there is no effective treatment for this kind of stubborn disease like smallpox. I and Taoist Master Sun are helpless!"

Li Shimin couldn't help but show a disappointed expression when he heard Li Xiu's answer. In fact, he also knew that Li Xiu and Sun Simiao were very likely to cure smallpox, but in this situation, he could only try it with a deliberation. Unfortunately, Li Xiu's answer shattered his last glimmer of hope.

"Your Majesty, although I have no way to treat smallpox, as a doctor, I want to do my best, so I want to beg Your Majesty here to agree and let me practice medicine in the epidemic area!" Sun Simiao also stepped forward and spoke and begged. In addition to fulfilling the duties of a doctor, Sun Simiao also wanted to get close to smallpox, hoping to find a way to treat this plague with his own medical skills.

"This..." Li Shimin also showed a embarrassed expression when he heard Sun Simiao's request. After a while, he spoke, "Master Sun, the situation in the epidemic area is very bad. Although smallpox has just been discovered, dozens of people have fallen ill. Moreover, the smallpox epidemic this time is very serious. Those cases have been bedridden in just a few days. Almost all those who have contact with them have been infected. If you go now, you may be infected!"

Smallpox is also divided into severity. After some smallpox outbreaks, the patient's condition is mild, and no one in one of a hundred people may die. However, some smallpox epidemics are very serious, and even one in three or four people will die. Moreover, this is the data from later generations. In ancient times when medical conditions were not met, the mortality rate would only be higher, and most of those who survived were stingy.

"Thank you for your concern, but I have made up my mind. Please forgive me!" Sun Simiao had already made up his mind when he came, so he would not give up because of Li Shimin's persuasion.

Seeing that Sun Simiao's attitude was so firm, Li Shimin was also very embarrassed. He also attached great importance to Sun Simiao's medical skills, especially his wife, Empress Changsun, who was cured by Sun Simiao. However, Empress Changsun's disease was also related to congenitals and may recur at any time in the future. In addition, smallpox may be transmitted to Chang'an City at any time. If the people around him are infected with smallpox, they also need treatment from famous doctors. Even if they cannot be cured, they can still be more confident of living.

It was precisely because of the above that Li Shimin was a little confused for a moment. But at this moment, Li Xiu suddenly stood up and stopped him and said, "Master Sun, you don't have to rush to the epidemic area, because we have one more important thing to do!"

As soon as Li Xiu said that, not only Sun Simiao was a little surprised, but Li Shimin, Changsun Wuji and others also looked at him in surprise. However, Li Xiu seemed very calm at this time and smiled again: "Your Majesty, Master Sun, once smallpox is infected, there is almost no effective treatment method, but there is no way to treat it, which does not mean that there is no way to prevent it. I just happened to have a way to prevent smallpox from being infected!"

"What!" Hearing Li Xiu's words, Li Shimin, Changsun Wuji and others looked at him in shock, and Sun Simiao rushed forward and grabbed his hand, "Your Majesty's words are serious?"

"Of course it's true. I have been thinking about this on the road just now, but I can't do it alone. It requires the consent and support of Your Majesty and the help of Master Sun!" Li Xiu also smiled at this time. Even though smallpox was almost extinct in later generations, its name was still active in various books. In addition, Li Xiu's previous generation in his previous life had fought against smallpox, so he also knew the effective way to deal with smallpox.

"That's great, Li Xiu, tell us quickly, what kind of way can prevent smallpox?" Li Shimin also walked forward excitedly at this time. After he learned that smallpox had erupted near Chang'an last night, he discussed with Changsun Wuji and the others in the middle of the night, but there was no other better way except to isolate it as much as possible. This made his hair almost white. Now Li Xiu finally let him see a glimmer of hope.

"This method is called growing vowel. Master Sun must know that people with smallpox will develop pus on their bodies, and cows will also suffer from similar diseases and some pus will develop on their bodies. This is vowel. The pus in vowel is the material we need. When used, you can apply this pus to a person's wounds, so that people will get vowel. However, the symptoms of this vowel are mild and will not die. After the illness is cured for a few days, this person will never be infected with gowel again!" Li Xiu immediately explained the method of growing vowel.

"This... is this method really effective?" As soon as Li Xiu finished speaking, he saw Du Ruhui, who was thin, stand up and said with some suspicion. He didn't have much contact with Li Xiu, and at most he nodded. Although he had heard Li Shimin and Fang Xuanling praise Li Xiu a lot, he was still a little suspicious about Li Xiu's ability, especially the method of growing cowpox sounded a bit mysterious. You know, he was also a rough medical theory, but he had never heard of such a cure for the disease?

"Du Xiang's suspicion is understandable. In fact, I have not tried this method myself, but we still have time. Master Sun is here, so we can find someone to try it!" Li Xiu was not angry about Du Ruhui's suspicion. Although he knew that this method of growing cowpox was definitely effective, at least he had to let Li Shimin and the others see the effect.

"What the prince consort said is very true. I think it would be better to ask someone to find a few death row prisoners to plant cowpox for them, and then let them enter the epidemic area. Then you will know the effect!" Fang Xuanling smiled and agreed with Li Xiu.

"Okay! Just do it like this. If you need anything, Li Xiu, just say it. No matter how difficult it is, I will help you do it!" Li Shimin said at this time. With his understanding of Li Xiu, as long as it is something that Li Xiu dares to say, even if he is not sure, he will definitely be 70% or 80% sure, so he said these words of unconditional support for Li Xiu.

"Thank you for your trust. I don't need much. If you want to grow cowpox, you naturally have to take it from cowpox. So I need your Majesty to find cowpox as much as possible, and even concentrate some healthy cows, and then let them all be infected with cowpox. Then the master's people took the pus from cowpox. There were also several death row prisoners for experiments, and there were nothing else." Li Xiu replied with a smile.

"No problem! Fang Xiang, let me leave this matter to you personally. Try to assist Li Xiu in implementing this method of growing cowpox!" Li Shimin agreed readily at this time, and also sent his most effective help to Li Xiu. This shows how he attaches importance to this matter.

Fang Xuanling immediately agreed when he heard this, and then a series of decrees were issued from the imperial city. All the imperial institutions near Chang'an mobilized them to requisition all the oxen that could be found, and then concentrated them in a military camp in the south of the city. Li Xiu took advantage of this preparation time to go home and explain to Princess Pingyang about growing cowpox. As a result, Princess Pingyang and the Yi Niang also supported him very much. After all, if smallpox could be prevented, they would not have to be as worried as they are now.
Chapter completed!