Zheng Boyuan's fever quickly returned, which Chen Zhaoci believed was caused by his wound.

The two wounds—the round one from the arrowhead—were red and swollen around the edges, constantly oozing yellow fluid, while the long knife wound on the abdomen, though unable to heal, hadn't swelled up.

Chen Zhaoci had not studied microbiology. She knew that if there were anti-inflammatory drugs like penicillin, such a wound should be able to reduce swelling and inflammation quickly. But where could she find such medicine now?

Xu Zhi hadn't had a proper rest for two days. Her eyes were red and swollen. Chen Zhaoci told her to rest, but she shook her head and continued to do what she was supposed to do at her own pace. Chen Zhaoci could only sigh inwardly and then try to find some anti-inflammatory medicine, make it into powder, and apply it to the wound to see what would be effective.

As the year draws to a close, although the roads are difficult to travel due to the heavy snow, it still cannot dampen the joy of the people celebrating the New Year. There are many villages around the village, and the sound of firecrackers can often be heard from near or far. Even the village manager is busy purchasing all kinds of New Year's goods.

After Zheng Yuanyuan shut down the workshop in the south of the city, she rushed over as soon as she received the letter. When she saw Zheng Boyuan lying on the kang, she hugged Xu Zhi and cried. Xu Zhi, on the other hand, stopped crying at this time. She was holding on with her spirit and didn't let herself be idle, for fear that if she was idle, she would start to have wild thoughts.

The people from Medicine Valley arrived on the 25th of the twelfth lunar month. It was an elderly man with a white beard, accompanied by a teenage girl. Chen's eldest uncle had visited Medicine Valley years ago for some reason and knew the white-bearded old man. After meeting him, he addressed him as Uncle Yu. After the introduction, he learned that the seemingly quirky girl was Uncle Yu's granddaughter, named Yu Lingli.

After examining Zheng Boyuan's injuries, Uncle Yu said to Uncle Chen and Chen Zhaoci, "This poison is indeed a rare poison from the Western Regions. When used on external wounds, the wounds will not heal for a long time, and the person will slowly become weak and die due to infection. What you did before was right, but it will be very troublesome to remove this poison."

Chen Zhaoci said, "Uncle Yu, we have to get rid of the poison no matter how much trouble it is. If you need anything, just let us know and we will definitely find a way."

Master Yu nodded and said, "I've only heard of this poison. The reason this child has been able to hold on until now is entirely because he took those antidote pills when he was shot. Although those pills cannot cure all poisons, they can at least neutralize some of these poisons. Zhao Ci, Zhao Cheng, if you want to save this child, you still have to remove the poison from his body."

Chen Zhaoci and Chen Zhaocheng nodded repeatedly. Everyone understood the reasoning, but the toxicity of this poison couldn't be neutralized so easily.

After carefully examining the wound, Uncle Yu said to Chen Zhaoci, "Zhaoci, I have a prescription here, for both external and internal use. The external medicine needs to be made into an ointment. I will prescribe it for you. Once you have prepared it, give the child a medicated bath after the wound has healed. This will gradually draw out the toxins from the body."

Looking at Zheng Boyuan's circular scar, Chen Zhaoci suddenly thought of the detoxifying ointment from later generations.

Xu Rao was under a lot of pressure due to a research project, and her heavy workload caused her to have a weakened immune system. She developed a boil on her neck. Chen Zhaoci took her to the hospital for a checkup, where an old traditional Chinese medicine doctor prescribed a detoxifying plaster and several doses of oral anti-inflammatory medicine. Xu Rao used both the plaster and the medicine, and after a few days, the effect was very good. In particular, the detoxifying plaster worked very well. Chen Zhaoci changed the dressing for Xu Rao every day and watched as the small plaster drew out the abscess from the boil.

At that time, Chen Zhaoci was interested in traditional Chinese medicine. Whenever he had time, he would go to the TCM department to ask questions about things that interested him. He even chased after his colleagues in the TCM department to find out the details of the detoxifying plaster with visible effects. He studied the ingredients of the detoxifying plaster very carefully. Now, when he heard his senior brother Yu talk about external application and internal use, he immediately thought of the detoxifying plaster.

After showing the prescription for the detoxifying ointment to Master Yu, Master Yu pondered for a long time and said, "This prescription is excellent. Zhao Ci, you should first make the ointment according to the prescription. I will prescribe a few internal prescriptions for clearing heat and detoxifying. In any case, let's try it first."

Chen Zhaoci followed the prescription, got the medicine, and after making the detoxifying ointment, applied it to Zheng Boyuan's circular wound.

It was already dinnertime. After applying the detoxifying ointment, Chen Zhaoci had a simple dinner and stayed in Zheng Boyuan's room to carefully observe Zheng Boyuan's condition after the ointment was applied.

After Master Yu's prescription was prepared, Zheng Boyuan poured the medicine into a pitcher and quickly started it up.

Chen Zhaoci thought that Zheng Boyuan's fever might be a defense mechanism activated by his own body. After using physical cooling methods, Zheng Boyuan woke up at dawn.

Zheng Boyuan drank a small bowl of millet porridge, and his complexion improved a lot. After Uncle Yu finished breakfast, he came over, and Chen Zhaoci peeled off the plaster that had been applied to the wound.

The black plaster had turned white and was covered with sticky swelling fluid. Master Yu nodded and said, "Zhao Ci, it seems our method is working. Let's use it like this for a couple of days and see."

Chen Zhaocheng followed behind Chen Zhaoci and his senior brother Yu, recording the treatment process bit by bit. He was fascinated by pharmacology, especially the detoxification process of some uncommon poisons, and naturally would not miss this rare opportunity.

Xu Zhi had been waiting patiently, and when she heard that her Uncle Yu said the medicine was effective, a relieved smile finally appeared on her face.

Yu Lingli, who came with her Uncle Yu, and Zheng Yuanyuan quickly became friends.

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