Siheyuan: Mastery started in the 50s

Wang Qiang, a middle-aged man with great prestige in the courtyard, is tall and strong, with a firm look in his eyes. He is an upright man, always willing to help others, and is well respected by everyone in the courtyard. However, recently, he found that Qin Huairu, the gentle and virtuous young woman, had become a little abnormal in her behavior.

Qin Huairu is a gentle and virtuous woman. She always smiles and is very polite. Her husband has been away at sea for many years. She lives alone with her children in a courtyard. Although her life is hard, she has never complained in front of others. Because of this, everyone likes her. However, recently Qin Huairu has become extremely sensitive, often losing her temper for no reason, and even arguing with neighbors over trivial matters, which makes Wang Qiang very confused.

One evening, when Wang Qiang was walking in the yard, he accidentally heard Qin Huairu's child Xiaobao crying. He walked over and knocked on the door gently, "Huairu, what happened?"

The door slowly opened, and Qin Huairu stood at the door, her face pale, with a hint of fear in her eyes. She looked at Wang Qiang, wanting to say something but stopping herself.

"What's wrong with Xiaobao?" Wang Qiang asked gently.

Qin Huairu hesitated for a while and finally spoke, "Brother Wang Qiang, Xiaobao has been complaining of stomachaches recently, and I don’t know what’s going on." Her voice trembled a little, and she seemed extremely helpless.

Wang Qiang frowned, "Have you taken Xiaobao to see a doctor?"

"I have seen him, but the doctor said there is nothing wrong. He just asked me to give him some light food." Qin Huairu replied helplessly.

"Maybe the child has eaten something unclean recently?" Wang Qiang suggested.

Qin Huairu nodded, but her expression was still full of doubt. Wang Qiang vaguely felt that things were not simple.

The next morning, Wang Qiang decided to go and see Xiaobao in person. He arrived at Qinhuai Rujia and saw Xiaobao curled up on the bed, his face pale and his forehead covered with fine beads of sweat.

"Huai Ru, Xiao Bao's condition doesn't look good. Let's go to the hospital again." Wang Qiang said anxiously.

Qin Huairu nodded helplessly, and the two of them took Xiaobao to the hospital. After a series of examinations, the doctor still could not find the specific cause of the disease, but just prescribed some medicine and asked them to go back and continue observation.

After returning to the courtyard, Xiaobao's condition did not improve, but became more serious. This made Qin Huairu extremely anxious. She kept asking for various folk remedies in the courtyard, hoping to find a way to cure Xiaobao. Wang Qiang saw this and felt that things were not simple.

One night, Wang Qiang was walking in the yard and happened to see Qin Huairu sitting alone under the eaves, looking dazed. He walked up to her and asked softly, "Huairu, has Xiaobao's condition improved recently?"

Qin Huairu shook her head, tears flashing in her eyes, "Brother Wang Qiang, I really don't know what to do."

Wang Qiang pondered for a moment and decided to investigate it himself. He returned home and dug out some old books, trying to find some clues. After some research, he found that Xiaobao's symptoms were very similar to some kind of chronic poisoning. This discovery surprised him, and he decided to tell Qin Huairu immediately.

The next morning, Wang Qiang found Qin Huairu and told her what he had discovered. Qin Huairu turned extremely pale after hearing this. "Brother Wang Qiang, are you saying that Xiaobao was poisoned?"

"I just have a suspicion, but to be on the safe side, we must find an expert to confirm it." Wang Qiang said seriously.

So, the two took Xiaobao to a large hospital in the city and asked experts to conduct a detailed examination. After a series of examinations, the experts finally confirmed that Xiaobao was indeed poisoned. This news was like a bolt from the blue, and Qin Huairu almost fainted.

"Brother Wang Qiang, what is going on? How could Xiaobao be poisoned?" Qin Huairu was in tears and her voice was trembling.

Wang Qiang pondered for a moment, "We must find out what Xiaobao has been exposed to and what he has eaten before we can find the source of the poison."

After returning to the courtyard, Wang Qiang and Qin Huairu began to check Xiaobao's diet and living environment one by one. After careful investigation, they found that a snack that Xiaobao usually ate was a little abnormal. Wang Qiang took the snack samples and sent them for testing in person. The results showed that these snacks contained a chronic toxin.

"Huai Ru, who bought these snacks for Xiaobao?" Wang Qiang asked.

Qin Huairu recalled, "It was Aunt Li next door. She saw that Xiaobao liked to eat it, so she often sent some over."

"Aunt Li? Why would she do this?" Wang Qiang was shocked.

Qin Huairu also found it unbelievable. "Aunt Li is usually very kind to our family. I don't believe she would do such a thing."

"Let's go and ask clearly." Wang Qiang decided to go to Aunt Li in person to find out.

They arrived at Aunt Li's house and saw her busy in the kitchen. Wang Qiang knocked on the door and said, "Aunt Li, we have something to ask you."

Aunt Li looked up and saw Wang Qiang and Qin Huairu. She had a look of uneasiness on her face. "You are here. What's the matter?"

Wang Qiang asked directly, "Aunt Li, did you give those snacks that Xiaobao ate?"

Aunt Li was stunned for a moment, then nodded, "Yes, Xiaobao likes to eat it, so I bought some for him."

"We found that those snacks contained toxins, and Xiaobao is poisoned now." There was a hint of anger in Wang Qiang's voice.

Aunt Li's face turned pale instantly, and her hands began to tremble. "This... this is impossible. I bought ordinary snacks. How could they be poisonous?"

Wang Qiang continued to ask, "Where did you buy these snacks?"

Aunt Li seemed a little flustered. "It's the little shop on the corner. I often buy things there and never have any problems."

Wang Qiang felt that the matter was not simple, so he decided to go to the store to have a look. He and Qin Huairu came to the store on the corner, and the owner greeted them warmly, "Wang Qiang, Qin Huairu, how come you have time to come here today?"

Wang Qiang didn't exchange pleasantries and asked directly, "We would like to ask, is there anything unusual in the snacks in your store recently?"

The shop owner was stunned for a moment, looking a little puzzled. "There's nothing unusual. Everything is the same as before."

Wang Qiang took out a bag of snacks and asked, "Do you remember where you got these snacks from?"

The shop owner looked at the snack packaging and thought for a moment, "I bought these from a small wholesaler. We have been working together for a long time and there has never been a problem."

Wang Qiang decided to continue the investigation, and he and Qin Huairu found the small wholesaler. After some questioning, the wholesaler finally told the truth, "We recently received a batch of new goods, the price is cheap, but the quality seems to have some problems. I didn't check it carefully and sold it to you directly."