Although Xu Xian didn't understand Qiao Chen'an's scholar who opened a pharmacy, he didn't say anything, the two were playmates who grew up together, and Qiao Chen'an needed his help, so he gladly agreed, just out of etiquette, and he still needed to talk to Wu Renjie from Jirentang.

Xu Xian didn't know why Wu Yulian's cute and delicate face suddenly appeared in his heart, and said in his heart that he was going to leave Jirentang, but he was afraid that she would be sad for a while!

How worried should my sister be about herself, is she doing well?

Xu Xianwu was out of his mind, and suddenly heard Qiao Chen'an beside him say: "Hanwen, this smallpox epidemic is not incurable. ”

"What did you say?"

Xu Xian suddenly came back to his senses, looked excited, pulled his sleeve regardless of etiquette, and said nervously: "Could it be that Chen'an, do you know how to cure this smallpox? This, this is not a joke!"

Qiao Chen'an nodded under his eager and nervous gaze, Xu Xian's face suddenly turned red, and said, "How can we cure such a vicious disease?"

Qiao Chen'an remained silent, gently brushed his palm, and said, "Hanwen, don't be excited, just follow me." Walking forward first, Xu Xian also realized that he was a little out of shape at this time, his face turned red, and he followed closely behind him.

After not going far, they came to a farmhouse, the courtyard was empty, and there was no one, but unfortunately died of smallpox, just a few days ago, only an old cow was tied to the courtyard wall.

Qiao Chen'an led Xu Xian to the scalper and said, "Han Wen can see anything abnormal?"

Xu Xian circled around the scalper a few times, his face showed doubt, but he shook his head and said, "There is nothing abnormal!"

Qiao Chen'an said with a smile: "This cow has contracted smallpox, a mortal disease for people, but it is just an ordinary disease for people. He squatted down, pointed to the belly of the ox, where the pus had festered, and said, "Seeing these abscesses, plant these things on the people, and you will not be infected with smallpox again in this life." As for those who have contracted smallpox......"

A hint of sadness appeared on his face, "Planting this sores and pus should also have an effect, at least there is hope of regaining his life from the hands of Lord Hades......"

He suddenly realized a mistake he had made, inoculating cowpox against smallpox and keeping away from this harmful disease, and for those who have been infected, it is still unknown whether it is effective, but now, it can only be used as a live horse doctor, which is no longer a way.

Xu Xian listened to what he said with a serious and solemn face, and he already believed a little in his heart, because in his impression, Qiao Chenan was by no means a person who joked about this kind of thing, remembering what he said just now, he was surprised: "You just said that as long as you plant this thing, you can make people free from smallpox for a lifetime?!"

"Yes!" Qiao Chen'an's answer was only one word.

In the next few hours, Xu Xian naturally pestered him as expected, asking him why the pustules on the cow can prevent smallpox, Qiao Chenan was very helpless when asked, and explained the modern set of scientific theories in the later generations no less than ten times, what antibodies, immunity, etc., but Xu Xian still heard it in a fog, which is also very normal, after all, it is still too difficult for him to understand the science that has developed for thousands of years in later generations with the knowledge of an ancient person's mind.

Within a few days, with the efforts of a large number of people, almost with Suzhou as the center, the sick cattle infected with smallpox within a radius of 100 miles were raised in captivity to provide pus, and three days later, the security hall was officially opened!

The sound of firecrackers sounded, after a burst of gongs and drums, the signboard of the Baoan Hall was erected, and under the hard work of the five ghosts, the news that Dr. Xu of the Bao Antang could treat the epidemic spread far and wide, and it could be said that it spread quickly like he wanted to grow wings, but after a little half a day, most of the people in Suzhou City already knew.

On the first day of opening, the security hall was surrounded by many people, and at a glance, there were no less than thousands of people, and everyone had a bit of expectation on their faces, and they also had the fear of this evil disease, and they rushed to the store, almost crushing the building.

As a last resort, Qiao Chen'an had no choice but to arrange the five ghosts to maintain order and quietly exert his mana, and the chaotic crowd lined up in a long line under an invisible but irresistible force, until the end of the street, Xu Xian was inoculating the people one by one, and even Wu Yulian's family of three from Jirentang came to help.

It was like this for several days in a row, and there were many people who didn't believe in his medical skills because Xu Xian was young, only in his early twenties, and he had made a mistake and killed people before.

But smallpox was vicious and ferocious, but he had to pin all his hopes on him.

After those people who had been inoculated with blister pus went back, they were still a little frightened at first, but after a long time, no one was infected with the disease, and even those who had been infected with the disease, many of them were left alive.

However, in a few days, more and more people, whether rich or poor, are dragging their families to the security hall to thank Xu Xian, the pennant is almost all over the walls of the security hall, and even many rich families spend a lot of money, just to repay their life-saving grace, everyone shouts "Xu Shen Doctor", the streets and alleys are full of Xu Xian's beautiful talk, and even the murder case in Hangzhou, some people say that Xu Xian is innocently implicated.

Xu Xian sat in the hall, with a slight cramped expression on his face, only he knew it, and he couldn't afford the name of this miracle doctor at all.

In less than half a month, there were almost no people infected with smallpox in Suzhou City, and those who fled from other towns also rushed back, and the whole city gradually recovered to the Japanese currency, and the business of Baoantang was better day by day, and there was an endless stream of people who saw a doctor, and some people even said that they only saw a doctor and took medicine in Baoantang after that.

Not only because Xu Xian saved the lives of the people in the city, but also because the Baoan Tang usually treats the poor people for free, even including beggars, which kind act the people in the city don't know?

On the outskirts of Suzhou, Bai Suzhen stood in the small pavilion, and suddenly felt in her heart, feeling as if she had gone to an invisible shackle, and she had a clear understanding.

The thousand-year-old favor will eventually be repaid.