After all, it was the first time to engage in scientific research, so Li Feng also helped Xie Hong and others to make a relatively complete plan. From theory to production to mass processing, production and sales, they all said it in detail.

In addition, he also wrote a letter asking Xie Hong and others to go to Mr. Yu to seek cooperation. Making firecrackers requires a lot of paper. But this paper does not require too good. If you use good white paper, the cost of firecrackers is too high.

After making arrangements, these Taoist priests left happily. They could do so much, so they had to mobilize the masses. The villagers of Longquan Village could not count on them, but there were many other villages near Qingyun Temple, and they all looked at Longquan Village.

As long as the secret recipe of gunpowder is not leaked, the most core thing will be in the hands of Qingyun Temple and will be invincible.

After seeing Xie Hong and others off, Li Feng saw a carriage coming towards him, surrounded by several tall horses and some servants, following the carriage, and stopped at the entrance of the medical school.

Chao Yuanfang first got off the horse. During the Sui and Tang Dynasties, sedan chairs had not yet emerged. Whether they were civil servants or military generals, they were accustomed to riding horses.

At the same time, Li Feng also saw another acquaintance, which turned out to be Yang Xuangan, whom he met in Hu Ji's restaurant.

Li Feng understood a little: I am afraid that the gallbladder patient mentioned by Chao Yuanfang has something to do with Yang Su, who is now in power, so no wonder he has to be careful.

"Young Master Feng, we meet again." Yang Xuangan dismounted and smiled. He still admired this Young Master Feng very much. The song urged you not to cherish the golden texels, which also convinced him. Yang Xuangan liked to make friends with scholars the most.

Li Feng also quickly returned the greeting: "Brother Xuangan, Li Feng is polite."

Seeing that these two people were old acquaintances, Chao Yuanfang felt much more relieved. No wonder Yang Xuangan immediately persuaded his father Yang Su when he said that he had sent the patient to Li Feng for treatment.

"My aunt is infected with a bad disease, and she is in trouble." Yang Xuangan simply carried a middle-aged woman out of the car with a young man beside her, his younger brother Yang Xuanting. She thought that she was Yang Su's sister.

Li Feng observed it and felt very uncomfortable. The patient's condition was a bit bad. He closed his eyes and was fat and he was swelling. It seemed that in addition to the gallbladder, the heart, liver and other organs may have lesions. Such patients do have greater risks if they undergo surgery.

As the saying goes, "As a skilled person, he is brave, anyway, he has given up treatment and is about to die, so Li Feng will be treated as a living person. Even if there is a medical accident, as a doctor, he must have this responsibility.

So, the woman was carried to the largest classroom and started to prepare for the operation. The students were well trained and soon prepared for the operation. The patients also lay on the back on the operating bed and raised their knees, which could better relax the muscles.

After taking Mafei San, Li Feng also changed into surgical gowns, put on a mask, and gloves to prepare to start the incision.

This glove has been developed recently, and the materials are really hard to find. There was no rubber or plastic at this time. In the end, Niu Er found some pig urine bubbles and carefully sewed them. Then it was defat-removing and disinfecting, which was very precious.

At this moment, in addition to Sun Yaowang, Chao Yuanfang and Zhen Quan present, 73 students from the Medical College were also watching around.

In addition, there are the Yang Xuangan brothers. Seeing a large circle of people quietly around, Yang Xuanting had an objection: Why do you feel like watching a monkey playing?

Moreover, although my aunt is already middle-aged, she is a woman after all, and so many men are watching on the side, it is quite indecent. So she whispered to her elder brother.

At this time, the large classroom was silent, so even if Yang Xuanting spoke very lightly, Li Feng still heard it and waved his hand: "It's okay, don't hide the disease from the doctor, everyone present is all doctors."

"But--" Yang Xuanting tried to argue.

However, in the operating room, Li Feng is absolutely authoritative, and any decision is unquestionable: "I have performed surgery on women who have not yet been married, so you don't need to say much!"

Even Yang Xuangan was a little surprised. In his feeling, Li Feng and the gentle young master Feng seemed to have changed into another person at this moment.

It was as if he was following his father's war, and the general who gave the order was as strong as a mountain of military orders, had this kind of spirit.

Perhaps, in this room, Mr. Feng is the general?

After thinking about this section, Yang Xuangan shook his head at his third brother and signaled him not to say much. So the operation officially began.

Because this woman is fat, Li Feng chose a diagonal incision under the right rib margin and was able to cut the ground. Under the current conditions, don’t think about laparoscopy or something.

While operating, he also told the students. In the classroom, only Li Feng's calm voice sounded slowly.

After opening his abdomen, Li Feng first conducted an investigation. The expressions of those who were observing around him were different. The students performed relatively normally. After all, although they had never tried it on people, they had all used knives on pigs.

For example, Chao Yuanfang and Zhen Quan changed their faces and colors. As for Yang Xuangan and Yang Xuanting, they had already left their heads and couldn't bear to look at them anymore. After all, they were close relatives of the patients, not their timidity.

While Li Feng was exploring the equipment in his hand, he explained to the students. Fortunately, his liver was normal. He asked Sun Erniang and Huma to come and help with the equipment. After searching the gallbladder below, a low scream sounded in the classroom.

The gallbladder has been ulcerated very seriously. Although it is the first time that most of them have seen the gallbladder in the human body, they have seen pig bitter gallbladder, and everyone knows what it is normal.

"It must be removed." Li Feng checked that there were no stones in the bile duct and began to peel off the gallbladder. This step is very critical, and he must be bold, careful, and steady.

The people next to them were also holding their breath, as if they were afraid of affecting the operation. During this period, Yang Xuanting couldn't help but look back, but then he rushed out of the classroom with his mouth covering his mouth.

The entire operation was carried out very smoothly under Li Feng's skillful operation, with gallbladder removal, blood vessel ligation, etc., step by step in an orderly manner.

Just when everything was about to be done, the patient's Ma Fei Powder Medicine passed, and his mouth was moaning and his body was about to twist.

"Suppress!" Li Feng shouted softly. By this time, there was no other way.

Immediately, Niu Er and others rushed forward, holding down several places where the patient was prone to exerting force. Even the patient's mouth was stuffed into a ball of cloth.

They have practiced this item in their daily life, after all, Mafei San is not that reliable, so this plan must be made.

Li Feng's expression was as normal, and he continued to complete the remaining surgical parts, and closed the abdomen in an orderly manner and sutured layer by layer without any influence from the patient.

"Okay, the operation is over, and a shot of penicillin is injected." Li Feng gave Yang Xuangan another medical advice, including the patient's lying posture and diet, etc. In this case, you still need to observe at the Medical Center for a few days before you can be discharged from the hospital.

The patient was also awake and very conscious. Apart from the pain in the blade, he did not feel much. It seemed that the operation was quite successful. The patient even said to Yang Xuangan weakly: "Xuangan, thank you to the genius doctor on my behalf."

Li Feng waved his hand and then went to change his clothes. He turned around, and Chao Yuanfang behind him was also ready to stand up. After nearly an hour of operation, Chao Yuanfang was sweating all over and stood up suddenly. He felt a dizzy turn and his body fell to the side.
Chapter completed!