Qingluan followed Lu Zheng listlessly. Lu Zheng's words had a huge impact on him, and he was unable to react for a while. Lu Zheng, however, was not too moved, but went to the families whose houses were on fire to question them according to the original plan.

The first family they went to was a farmer's family, which was also the closest to the fire in the posthouse. The family's surname was Zhang, which was a big surname here. They also had some relatives with Zhang Lin. The family originally had a green brick and tile house, but it was also destroyed in this fire. Fortunately, no one died in the fire. Because they could not build a new house for the time being, they could only build a few straw huts to make ends meet.

Lu Zheng asked the head of the family, "What exactly happened to the fire that day?"

The head of the family was in his prime, but there were already deep wrinkles on his forehead. He sighed, "That day was my daughter's engagement, and our family was so happy that we drank a few more cups. Unexpectedly, there was a fire in the middle of the night and the house was burned down."

"Did anything strange happen?"

The head of the family thought for a while and shook his head, "No."

At this moment, his little son rushed over and almost bumped into Lu Zheng's legs. Lu Zheng was startled, and soon the child's mother caught up and slapped the child on the butt, "Why are you running around? Apologize to this young master!" After that, she carefully glanced at Lu Zheng before taking the crying little son away.

The head of the household hurriedly said, "I'm sorry, sir, this child has been like this lately..."

Lu Zheng shook his head, "It's nothing."

Qingluan saw that she was not needed here, so she simply took out a candy to tease the child. The child drooled when he saw the candy. The child's mother said embarrassedly, "Sir, this..."

Qingluan smiled and stuffed the candy into the child's hand. The child took the candy and quickly stuffed it into his mouth, then ran away without even looking at Qingluan.

"This damn kid..." The head of the household saw it from the side and immediately cursed.

Lu Zheng and Qingluan looked at each other and felt helpless. The subsequent interrogation did not get any useful information, so the two went to the second family.

Compared with the smoothness of the first family, this one was much more troublesome, because this family was a widow with a daughter. As the saying goes, troubles come before a widow's door. In response to Lu Zheng's interrogation, the widow simply locked them out.

Lu Zheng knocked on the door again and again but got no response, so he had no choice but to give up.

Apart from these two households, the others were relatively far away. Lu Zheng originally planned to go in the afternoon, but seeing that it was still early, he said to Qingluan, "Why don't we go to the next household?"

Qingluan touched his chin, not knowing what he was thinking. Suddenly he came to his senses and asked, "What did Master Lu just say?"

"I said we should go to the next household to have a look, how about that?" Lu Zheng repeated.

Qingluan did not answer, but asked: "I feel a little strange."

Lu Zheng did not expect him to say that. After all, they did not get any useful information this morning. Hearing Qingluan say that, he was immediately refreshed and said hurriedly: "You tell me."

Qingluan spread out his hands and said: "I think that family seems to have signs of poisoning, and the widow who just opened the door has a pale face and black lips. She should have been poisoned. The moment I opened the door, I smelled

"Qingluan said, "

Yes, and it seems that the child in that family is the most seriously poisoned."

Lu Zheng's expression suddenly became serious: "Let's go back and ask Doctor Wang to take a look." The two

returned to the villa. Qingluan reported what happened to Rong Zhen, and Lu Zheng went to find Doctor Wang. Doctor Wang was shocked when he heard what he said: "Poisoned?!"

Lu Zheng nodded.

Doctor Wang frowned and said, "Young master, can I take your pulse?"

Lu Zheng placed his wrist on the medicine pillow in front of Doctor Wang. Doctor Wang took his pulse carefully, then changed to the other hand. After a long time, he sighed and said, "Young master, there are slight signs of poisoning on your body. If I hadn't looked carefully, I might not have discovered it at all."

Lu Zheng hurriedly said, "Can you tell what kind of poison it is?"

Doctor Wang shook his head and said, "The poison is too mild to be judged. It seems that we have to wait and see a few other people before we can be sure."

There was no time to lose. Lu Zheng didn't even plan to eat. He pulled Doctor Wang and Qingluan and walked towards that family. As soon as they approached his house, they heard panicked crying and the sound of heavy objects falling to the ground.

The three of them were anxious and ran over. They saw the child who had been sick in the morning lying on the ground with a black face and foaming at the mouth. His mother was crying beside him, and the head of the family looked panicked.

When Doctor Wang came in, the family seemed to have seen hope of saving their lives. The child's mother knelt on the ground and kowtowed: "Doctor Wang, save my child!"

Doctor Wang looked serious and ignored everything else. He walked over quickly, put his hand on the child's wrist, and then took out a gold needle to prick several acupuncture points on his face, but the child did not get better and started to roll his eyes.

Doctor Wang's forehead was covered with beads of sweat. He took off the child's clothes, put the child on his knees, and said to the child's mother, "Go and boil some mung bean water!"

The child's mother was already in despair, but when she heard his words, her eyes suddenly lit up. She crawled from the ground to the earthen stove and put the pot on to boil mung beans.

Doctor Wang took out a smooth and identifiable ox horn scraping board from the medicine box and scraped it vigorously along the child's back. Soon the child's back was scraped red, and then some purple blood spots slowly emerged. Doctor Wang did not stop, but continued to scrape vigorously until the child in his arms trembled and let out a low cry.

Doctor Wang was relieved, threw the scraping board back into the medicine box, and turned the child over. Compared to when they first arrived, the child's complexion looked much better, but there was still a lot of white foam at the corners of his mouth.

Doctor Wang wiped the sweat from his forehead and asked the child's father: "Go find some dry moxa leaves, quickly."

"Oh...oh." The child's father replied blankly and ran out quickly. It was not long after the Dragon Boat Festival, and many families had moxa leaves, so the child's father brought the moxa leaves back soon.

Doctor Wang used the moxibustion method and finally saved the child's life.

By the time he prescribed medicine and fed the child a bowl of mung bean water, it was already past mealtime. Because they were grateful to Doctor Wang for saving the child's life, the family tried their best to keep them for dinner and even went to cut meat.

Because they still had to examine their patients, they did not refuse.

After the meal, Doctor Wang examined them one by one. As expected, they all showed signs of poisoning. But Doctor Wang's expression became strange.

Seeing this, Lu Zheng couldn't help but ask, "Doctor Wang, is there something wrong?"

The family also looked at Doctor Wang nervously.

Doctor Wang shook his head: "It's strange that the symptoms of poisoning in you guys are actually different. This child has heat poison. His face is blue and his lips are bright red. The poison has acted quickly and rapidly. I guess he has been feeling irritable and restless these days, right?"

The child's mother nodded repeatedly: "That's right. He has been moving around all the time these days and always crying at night. We thought he was frightened by the fire and even invited a fortune teller to scare him away."

Doctor Wang nodded: "As for you and your wife, it's different from him. Your face is pale and your lips are black. This poison hurts your lungs. I guess you have been coughing a lot these days, and even have blood in your sputum, right?"

Looking at the expressions of the couple, they knew that Doctor Wang was right. The symptoms of poisoning in their other children were slightly milder, so Doctor Wang prescribed some medicine and told them how to take it.

Lu Zheng looked serious and asked, "Did you eat anything or touch anything strange on the day of the fire?"

The couple nodded blankly, the same answer as before.

Lu Zheng did not give up and asked many other questions, but all of them were negative.

Just as they were about to leave for the next house, the little girl who had been sitting in the corner with her brother and sister suddenly said timidly, "I... I smelled a strange... smell that day..."

Everyone's eyes immediately turned to the little girl, and she was so scared that she quickly shrank into her sister's arms.

Lu Zheng asked kindly, "What did you smell? Can you tell your uncle?"

The little girl hesitated for a moment before she whispered, "That night... I... I got up at night, I was afraid... so I asked my elder sister to accompany me... Elder sister, you smelled it too, right?"

The eldest daughter was the one who was engaged. She should have been pretty and happy waiting to be a bride, but she looked pale and sad. The fire not only destroyed her home, but also ruined her good marriage.

Hearing her sister say this, the girl looked a little dazed and nodded sullenly.

Lu Zheng asked again, "Can you describe what it smelled like?"

This time, the little girl hesitated for a long time and did not speak, but looked at her sister for help.

But the girl just sat there, motionless.

Lu Zheng felt that this was a bit tricky. The little girl was obviously young, and it was already good that she could remember these things. The eldest daughter of the family was probably mentally disturbed due to the shock. He didn't know whether he should continue to ask her this question that she didn't want to recall.

Unexpectedly, it was the child's mother who exploded. She rushed over and slapped her daughter, screaming: "What is the smell! Tell me! Who is the damn one who wants to hurt us! Tell me!"

The girl's face was directly hit to the side, but she didn't turn around, but kept this posture until a tear fell from her cheek. She seemed to finally wake up from the shadow brought by the fire, and hugged her mother and cried.

After a long time, the girl calmed down. She swallowed her saliva and answered with certainty: "The smell is very pungent, a smell of rotten eggs."

The author has something to say: The Chinese medicine knowledge in it is made up by me, please don't take it seriously...