Qin Cao looked at Yuan Fang and asked in surprise, "We can also learn?" ”

Yuan Fang rolled his eyes: "Of course, otherwise what am I doing here, come, everyone come." Everyone glanced at each other and walked over with a smile, especially the dozen or so doctors who had only recently joined, their eyes were full of admiration when they looked at Yuan Fang, and at the same time, they recalled in their hearts the words that Dr. Ye often said, 'It is the duty of doctors to treat diseases and save people, there is no distinction between each other, there are no boundaries.'

The purification of penicillin is not complicated, but there is not enough penicillin solution now, Yuan Fang can only use water to demonstrate, anyway, as long as he teaches Dr. Ye their method, and it will be good to have enough penicillin in the future and then confirm it from practice. Yuan Fang cleared his throat and began to describe the steps of purification, first applying the penicillin he had made before to a long piece of paper with a brush one finger width and drying it (you can use a fan).

Then, the scroll with the long paper is hung on a wooden frame of sufficient height, parallel to the ground, and then the place where the penicillin is air-dried is immersed in a solution prepared in the ratio of acid dialkali eight, and the solution of acid dialkali eight will penetrate into the paper through the capillary phenomenon and spread upward.

The impurities in the dried penicillin and penicillin solution are separated, and each of the substances has its own RF value, that is, each has its own fixed height that can be achieved. For example, impure substance A can reach a height of five inches, impure substance B can reach a height of seven inches, the height is fixed, and penicillin also has a fixed height, (many attempts to determine the height, and then mass production does not need to be measured again, as long as the paper is marked in advance on the long paper, and then cut off the fixed height of the paper is the location of the purified penicillin, which is called a few inches down, which is the distance of a few inches from the lower end to the top.) Use this property to separate unwanted substances.

Then cut out the part of the paper where the penicillin is gathered, cut it into a finger-wide strip, cut it into small squares, and put it in the middle of the medium with the germs to check the efficacy of the drug. Soaking the more potent penicillin paper in distilled water can refine the penicillin that is purer than before.

Xiaomei still maintains a good habit of recording, and writes down Yuan Fang's words word for word in a small book for future reference, after Yuan Fang's explanation, Xiaolu and Lu Ling immediately found Xiaomei and hoped to borrow and copy a copy, of course Xiaomei will not refuse, and happily agree.

Leaving Dr. Ye and the others to ponder the process of purification, Yuan Fang took Xiaolu to see Jiang Chengjia and Xin Huilan again, chatted with Xin Moyuan and Nangong Wenjin for a while, left Xiaolu to take care of them, and Yuqing and them went to visit Sang Rou and Yuyue.

Sang Rou and Yuyue have very good physical fitness, they recover quickly, plus Doctor Ye and they are using rare good medicines, it is estimated that it will not take long for them to recover, and they should be able to go out with Yuan Fang.

Yuqing and Sang Rou got together and talked freely, talking and laughing, the atmosphere was extremely joyful, Yuan Fang also took advantage of this time to mix a sick meal to fill his stomach, and only after eating and drinking enough did he leave with Lin Menghan and Huo Bingyan, who had taken over, and went to the new army garrison outside the city to find Chen Xin's dignitaries, and by the way, he asked for some advice on marching and fighting.

Because the distance was a little far, Yuan Fang and his party all took their horses and rode their horses out of the city gate, and Yuan Fang, a half-disabled person, had to endure the bumps and hurry together.

The garrison of the new army was not very far from the capital, only about twenty miles away, and the speed of the group was not in a hurry or slow, and it remained within the range that Yuan Fang could bear.

There was nothing to say all the way, Yuan Fang and his entourage came to the camp where the new army was stationed, and the soldiers on guard saw them from a distance and stepped forward to check, although Yuan Fang had a clear banner, and they could see clearly from afar, but the emperor was not very peaceful recently, Chen Xin told his subordinates to be careful, and the soldiers were also afraid that someone would pretend to be so they would not hesitate to offend these female soldiers of the royal guards to come forward to investigate.

Outside the camp gate, Chen Xin, who had been informed, came out, waited for Yuan Fang and his party to come over, turned over and dismounted, and said with a smile: "Doctor Yuan, General Yuqing, why did you come to me?" ”

Yuan Fang patted the dust on his body vigorously, wiped his face with his sleeve and complained: "This ash is too big, I said you can't build roads?" ”

Chen Xin rolled his eyes and said, "Build roads? What to repair? There are no materials and no manpower, the most important thing is that there is no money, and besides, who cares about these things when they are all soldiers. Alright, you kid don't complain, let's go in and talk. Chen Xin led everyone into the camp, pointing at the recruits on the training ground along the way, his expression was very complacent.

Yuan Fang has also experienced these seemingly simple but very difficult recruit training, watching the recruits in the field work hard to complete various actions according to the command of the officer, he couldn't help but sigh, at the beginning, he and Yang Xing were tossed by Lei Hua enough, but Yuan Fang was very grateful, if it wasn't for those high-intensity trainings at the beginning, it would be impossible for Yuan Fang and Yang Xing to survive in so many battles in the future.

Chen Xin glanced at Yuan Fang and asked, "Doctor Yuan, General Yuqing, what do you think?" ”

Yuqing didn't answer immediately, but asked, "How long have these recruits been training?" ”

Chen Xin smiled and said, "A little more than a month." ”

Yuqing admired and said: "In just one month, these recruits have basically mastered several battle formations, and General Chen is really good at leading the troops." Chen Xin looked at Yuan Fang more and more proudly.

Yuan Fang didn't know much about them, but he still praised them: "Well, it's really good, much stronger than us back then, at least they are real guys in their hands, not like us who are randomly comparing with each other with a wooden stick." "At the beginning, because of the problem of logistics and transportation, Yuan Fang and they had no equipment, and they could only find similar wooden sticks to practice their hands.

Chen Xin said with a smile: "Those are all in the past, now our military factory is extremely efficient, and a lot of ordnance has been stored during this time, and the military uniforms will be delivered in a few days, and when the time comes, when these recruits change into military uniforms, it will be no different from the regular army." ”

Chen Xin can now be said to be high-spirited, different from the past, now he can train recruits in his own way as he wants, and this army is of great significance to him, so Chen Xin is really attentive, and he will personally participate in training almost every day, and try his best to make his legion form combat effectiveness, so that he can be useful as a general, rather than helping Yang Xing as a military staff officer, that is not his style, he prefers the passion and blood of charging into battle, Fight the enemy face-to-face, not a bland game like a chess game where you can't even see the enemy.

In Chen Xin's big tent, everyone sat down, the orderly brought tea, Yuan Fang took a sip and his eyes lit up and said, "This tea is good, much stronger than mine." As he spoke, he looked at Chen Xin expectantly, and the meaning was self-evident.