The outside is loose and tight inside is the current state of the Song Dynasty. Although the whole country is preparing for the coming battle of the Liao Dynasty, the number of people who really know this is limited to a few. Even those soldiers who were transferred to Hebei only knew that they were ordered to change defenses, and they had no idea that they were about to participate in a major event that changed history.

As the behind-the-scenes promoter of this matter, Li Zhang spent most of his time in medical school, in addition to taking care of Qingzhi and Miaoyuan outside of the family, he also spent most of his time in medical school. The main reason was that he did not dare to go to the palace to see Zhao Zhen, because he was afraid that he would show abnormalities if he was too guilty. In addition, the medical school officially started, so he, the chief, naturally had a lot of things to deal with.

"Master, can these really work?" Zhou Zheng asked in disgustingly as he looked at the bottles of moldy liquid in front of him.

"It's definitely not possible now, because I can't purify these things, but someone must do these previous things. Maybe someone will think of a way to purify them in the future. Then there will be a life-saving medicine in this world." Li Zhang straightened his waist and looked at the culture fluid in front of him.

Among these culture mediums, he found a kind of penicillium from the moldy melon and put it in it to cultivate. Although he knew that penicillin is a good antibiotic and has a good therapeutic effect on diseases caused by many bacteria, he did not know how to purify it, and penicillin should not be taken orally, so he could only be purified and injected. This was really too difficult for Li Zhang.

Zhou Zheng still didn't understand Li Zhang's words very well, because he really couldn't see how these moldy things could cure the disease? But since Li Zhang said it, he would still choose to believe it.

In fact, Li Zhang sighed at this time, because the microscope he developed was not successful yet, and the glass had already burned out, and after adding lead, the transparency was also achieved. The lenses ground were quite good, and the principle of the microscope was not complicated. It only took time to make it, otherwise he could let Zhou Zheng see the microscope.

However, even with a microscope, it still didn't help the practicality of penicillin. I remember that it took more than ten years to go from being discovered in later generations to being truly practical. Moreover, the basic science of this era is really bad, and he has no idea how to purify penicillin. This is also one of the main reasons why he intends to promote education.

At this moment, suddenly, a burst of rapid footsteps came from outside, and then an assistant teacher shouted with surprise: "Captain, you are awake, that prisoner is awake!"

"That's great, let's go and have a look!" Li Zhang and Zhou Zheng both showed excitement when they heard this. They immediately followed the assistant teacher out of the room and then came to a large courtyard behind the college. This place was changed to the hospital by Li Zhang, and some medical research was also carried out here.

At that moment, Li Zhang and Zhou Zheng rushed into a ward. A bald man was lying on the bed. Although his skeleton was large, he had a pale face and thin skin, looking half-dead. But at least now he was awake, and he was also looking around with his eyes open. When he saw Li Zhang rushing in, he showed a look of fear. Even though his limbs were tied, he began to struggle desperately, as if Li Zhang was like a demon in his eyes.

"Be honest, I have to sew it for you again if I break the wound away!" Li Zhang immediately scolded him when he saw the other party's appearance. This bald man was a murderous thief. He had no less than twenty lives in his hands. He had already sentenced Qiu Hou to ask for a beheading, but Li Zhang wanted to come over to use it as experimental materials.

The reason why I chose this guy was not just because he was a death row prisoner, but because this guy was sick, and he had intestinal abscess, that is, appendicitis. Although it was chronic, he also made this guy die. Based on the principle of waste utilization, Li Zhang asked him to do an experiment. He removed his appendix a few days ago and used all measures that could prevent inflammation. As a result, this guy's life was quite hard. He woke up after two days of unconsciousness.

Hearing Li Zhang's words, the bald thief immediately did not dare to struggle anymore, because when Li Zhang performed surgery on him, he might have given less anesthetics, or the guy's medicine was strong, but he woke up halfway through the surgery. He also saw Li Zhang with his own eyes cut open his stomach, took out something from it, and finally sewed his stomach. This was like walking in hell for the bald thief, and Li Zhang was a demon who was trying to eat human flesh.

Li Zhang didn't care what the death row prisoner was like. Even if he was cured, the guy would finally be pulled to Dongshikou and was cut with a knife. So he quickly came to the death row prisoner, lifted the quilt and looked at his wound. He found that there was no sign of inflammation in the suture area, which made him breathe a sigh of relief.

"Miracle! Miracle! You, the chief of the mountain, have cured his intestinal abscess. This is a terminal illness!" Zhou Zheng also came forward to look at the other party's wound, and then shouted in surprise. Although Li Zhang had performed some surgery on animals before, in their opinion, animals are animals after all, completely different from humans. However, this case made them more confident in the operation.

"This is nothing. We still need to do more surgery and sort out a set of experience and systems to ensure the success rate of the surgery. In addition, you should practice more. If you have the chance in the future, you can ask you to take the lead in the surgery!" Li Zhang also smiled and said.

In fact, Li Zhang was not humble. When he performed the operation on the bald thief this time, he felt that he was not prepared enough in many aspects. He just wanted to show Zhou Zheng and others the effect of the operation, so he forced the operation. Li Zhang was ready for failure, but he didn't expect that although the thief had been tortured by the pain for so long, his foundation was still there, and he actually survived, which was his luck.

Zhou Zheng and the others did not think that this was Li Zhang's luck. They only thought that Li Zhang was humble and had a living example in front of them, which made them more enthusiastic about surgery, and even wanted to have the opportunity to take the lead as soon as possible. After all, surgery and treatment generally only exist in legends, and it was the unique skill of the miracle doctor Hua Tuo, but they did not expect that they would have the opportunity to learn it.
Chapter completed!