"I want some too?" Er Dan, the burly farmer, looked at Zhang Yang with great confusion and said, "I'm not sick, my dog is sick!"

"No, you have to take it too!" Zhang Yang shook his head and stated firmly.

"Ah, then, then I'll just take the medicine," hearing Zhang Yang's voice, Er Dan faltered for a moment, and the words slipped out uncontrollably. After saying it, he paused, wondering why he had agreed so readily, considering he had hated taking medicine since childhood, especially the bitter Chinese herbs.

Er Dan was just an ordinary person, whereas Zhang Yang was already a cultivator who had reached the Great Perfection stage of the fourth layer of Internal Strength. Moreover, his recent gains at the Yan family's detached residence had enhanced him; Zhang Yang didn't need to exert his Internal Strength, yet a subtle, undeniable aura accompanied his every move, which is why Er Dan couldn't muster the will to refuse and readily agreed.

Fortunately, the father and son from the Sun family had only just been infected; the virus had neither spread nor mutated in their bodies, making it very easy to treat. If it had spread and mutated into a true plague, even Zhang Yang would find it difficult to handle.

Outside the detached residence, the sharp neigh of Zhui Feng’s horse suddenly sounded, followed by the low hum of vehicle engines.

"Who else is here?" The elder of the Yan family exchanged a look with Zhang Yang, both their eyes filled with doubt.

"Let's go see."

Zhang Yang helped the elder Yan walk outside, and Old Man Sun followed them. Only the dog's parents stayed inside, worried about their son.

The small courtyard of the Yan family seemed quite lively today. Outside the gate, two police cars and an ambulance were parked at the entrance. The snow-white Zhui Feng stood proudly, blocking the way, refusing entry to those in police uniforms and white doctor's coats.

Many villagers had crowded around, completely blocking the entrance to the Yan family home. They marveled at the magnificent white horse confronting the police and doctors while quietly discussing what could have happened at the Yan residence.

"What's going on?"

Just as the police officers were figuring out how to get past the white horse into the courtyard, Zhang Yang emerged, supporting the elder Yan.

Seeing Zhang Yang, Zhui Feng lazily moved aside. These people were too annoying, showing up so early with their loud metal boxes. Zhui Feng, who never cared for those machines, certainly wouldn't let those who rushed toward the courtyard the moment they stepped out proceed smoothly.

"Is this where Yan Fukai lives?" The leader of the police officers stepped forward as Zhang Yang appeared, asking for confirmation.

Yan Fukai was the deceased grandfather of Yan Liangfei. Hearing the question, the elder Yan quickly replied, "Yes, this is the place."

"Are the Sun family members from the east side of the village, the family of three, currently in your home?" After the elder's answer, the officer seemed to breathe a slight sigh of relief and asked directly.

The elder Yan nodded curiously, wondering what offense the Sun family had committed to warrant a visit from the police.

"It's like this, this is Doctor Wu from the County Hospital," the officer pulled the middle-aged doctor standing behind him forward and explained to the elder Yan. "The Sun family's child has a very dangerous infectious disease, so we ask for your cooperation in allowing us to take them back to the hospital."

Ah, that explained it. The elder Yan understood immediately. She glanced at Zhang Yang, then told the officer, "Officer, please don't worry. After taking the medicine, the Sun child's illness will be fine."

The elder Yan's words made the officer frown. He turned to look at the accompanying Doctor Wu.

Doctor Wu stepped forward then and said to the officer, "Officer Su, the child's illness is very likely a highly dangerous contagion. Since they ran out, I believe we must take everyone who has been in contact with them back for isolation and observation to ensure they haven't been infected!"

As soon as Doctor Wu spoke, the surrounding villagers instinctively stepped back several paces, fearing they might be infected too.

"If the situation weren't so serious, I wouldn't ask for police cooperation to take patients back," Doctor Wu added when he noticed the leading Officer Su hesitating.

At this point, the officer named Su no longer hesitated and said to the elder Yan, "Please understand and cooperate with our work."

The implication was clear: the Yan family members must also return to the County Hospital for isolation and observation.

"This..." The elder Yan's gaze fell upon Zhang Yang. She had no objection to the officer's request, but she worried Zhang Yang would refuse to go for isolation checks.

"I apologize, I need to make a call."

Zhang Yang certainly would not agree to be taken away for isolation. Firstly, the Sun child’s condition was basically controlled after taking the medicine and posed no further transmission risk. Secondly, he didn't believe a small County Hospital would have adequate facilities to isolate a disease that could potentially become a plague.

He took out his phone and dialed Zheng Qimo's number. Zheng Qimo was still in the northern suburbs dealing with the Jiang family's drug trafficking case and was extremely busy.

Although Zheng Qimo was working on an inter-provincial case this time, dismantling a major drug production and trafficking hub was undeniably his achievement. After this case concluded and he returned to Changjing, countless honors awaited him; there was even a strong possibility of his deputy position being made permanent before his retirement.

Zheng Qimo had not forgotten that this achievement was essentially gifted to him by Zhang Yang. Therefore, upon receiving Zhang Yang's call, despite his exhaustion, he was delighted.

After Zhang Yang briefly explained the situation, Zheng Qimo agreed to Zhang Yang's request without hesitation. Zheng Qimo trusted Zhang Yang's medical skills; if Zhang Yang said there was no problem, then the situation certainly wasn't as exaggerated as Doctor Wu claimed.

Next, Zhang Yang handed the phone to the officer named Su. What Zheng Qimo said to Officer Su was unknown, but after the call ended, Officer Su no longer insisted on taking the Yan family members and Zhang Yang back to the County Hospital for isolation and observation.

Doctor Wu saw Officer Su drop the requirement for the Yan family to return for observation and treatment, realizing Zhang Yang's phone call must have been effective. He became indignant, "This is dereliction of duty..." Officer Su looked helplessly at him, surprised that he was still pressing the issue, feeling quite awkward.

"Doctor Wu, could you look at this prescription and see if it is effective for the child's condition?" The elder Yan, having retrieved the prescription Zhang Yang had written from her daughter-in-law, Tang Xiaolan at some point, presented it to Doctor Wu.

Doctor Wu took the prescription with a mixture of doubt and curiosity. Initially, he glanced at it casually, but then he was stunned. Holding the paper with both hands, he solemnly took out a pair of black-rimmed glasses from his pocket and put them on, examining the prescription closely once more.

The prescription was actually quite short, but he studied it for a full five or six minutes. Then, he exclaimed in disbelief, "This, isn't this the Du Zhang San used to prevent plagues in ancient times?"

Zhang Yang was inwardly startled; he hadn't expected someone here could recognize his prescription.

Doctor Wu was correct; the prescription Zhang Yang had written earlier was an improvement on the Du Zhang San formula for treating and preventing plagues, which was based on the writings of the famous physician Ge Hong during the Jin Dynasty, found in the text A Handbook of Prescriptions for Emergencies.

Doctor Wu could recognize the formula because his family possessed many books on ancient medicine; he enjoyed flipping through them, which is how he recognized the formula at a glance.

Doctor Wu completely changed his previous attitude, becoming very respectful toward the elder Yan, and asked, "Elder, did you write this prescription?"

The elder Yan was not at all surprised by the drastic shift in the doctor's demeanor after reading the prescription. How could a formula written by a descendant of the Medical Sage Zhang be anything less than exceptional?

"I didn't write it; this is Doctor Zhang." The elder Yan proudly pointed to Zhang Yang, saying, "This is the master that my Fei'er apprenticed with in Changjing, Doctor Zhang Yang."

Doctor Wu carefully cradled the prescription in his hands, fearful of damaging it in the slightest. He looked at Zhang Yang, somewhat disbelieving. Such an ancient formula coming from someone so young.

"Young man, since you wrote this prescription, you must also be familiar with prescriptions like Laojun Shenming Baissan and Bi Wen Bing San recorded in A Handbook of Prescriptions for Emergencies?" Doctor Wu could barely contain his excitement, his voice trembling slightly as he looked at Zhang Yang.

Zhang Yang nodded; of course, he knew those formulas.

"Doctor Wu, what is special about this prescription?" Officer Su, observing Doctor Wu's reaction, was confused as to why seeing the formula had altered his attitude so much and asked curiously.

This prescription was like a calming pill; naturally, Doctor Wu had no further worries after seeing it. Ignoring Officer Su's question for a moment, he immediately addressed Zhang Yang, "Then, could you tell me these prescriptions?"

Before Zhang Yang could answer, Doctor Wu slapped his own forehead in frustration. "I apologize, I was too eager. Prescriptions like this are naturally very precious."

Zhang Yang glanced at the elder Yan, suddenly remembering something, and smiled, "It doesn't matter. I don't know if anyone else in Beijiao County has contracted this illness. I will leave the prescription with the elder Yan. From now on, Beijiao County can cooperate with Elder Yan to manage the epidemic prevention work here."

As soon as Zhang Yang finished speaking, everyone present was stunned, especially the elder Yan, who stared at Zhang Yang in disbelief, unsure why he would do this.

"Elder, I am taking Yan Liangfei back to Changjing. I leave the prescription with you; you will cooperate with the County Hospital to prevent this potentially spreading plague," Zhang Yang said specifically to the elder Yan.

Only Tang Xiaolan, who had appeared at the courtyard entrance at some unknown time, understood Zhang Yang’s intention. The elder Yan had been harboring suicidal thoughts, and Zhang Yang’s words were meant to give her something meaningful to do; dedicated to saving lives, the elder Yan would surely not contemplate ending her own life again.