Wan Xing quickly clicked "connect", it was Wei Chihong's call, the original desktop computer and other equipment in the autopsy laboratory could be restored after disinfection, he installed the Internet phone software, and Wan Xing got in touch.

"I understand, check the company that delivered the package first......" Wan Xing responded, beckoning to Qiao Yan.

Qiao Yan ran over quickly, and heard Yu Chihong's voice coming. "Let Qiao Yan answer the phone."

As soon as Qiao Yan heard that voice, her eyes instantly moistened. She took a deep breath and tried to control her emotions, so as not to make Yu Chihong worry again.

"Qiao Yan," Wei Chihong was full of apologies, "I'm really sorry, I can't accompany you to the airport tonight." ”

Qiao Yan's heart was sour, he was in danger, he was uncertain, and he was still thinking about this matter. "It's okay, I'll take care of it. As long as you are safe and sound, it is more important than anything else. Qiao Yan had tears in her eyes, but her tone was very steady.

"I'm fine, but I'm not free." Wei Chihong also tried his best to make his tone appear relaxed and calm, "It's not convenient for me to communicate here, and I have to work hard for you to communicate with Lu Bin and them and assist them in their investigation." ”

"What are you doing at the airport at night?" After the call, Wan Xing couldn't help but ask curiously.

"My mom came back from the U.S., and he was going to pick me up from the airport." Qiao Yan sighed helplessly.

Ten thousand stars suddenly. "Oh, no wonder he attaches so much importance to it, it turns out that he wants to meet his future mother-in-law."

Qiao Yan stared blankly at the computer screen, and her heart suddenly seemed to be stuffed into an entangled mess.

Lai Feng dipped a cotton swab in the residual poison gas powder on the carton for testing. "Lord Weichi, come and see." Lai Feng even called Wei Chihong as his master Cao Chongshan.

Yu Chihong walked over.

"Here's an image of the gas powder in that box." Lai Feng pointed to the screen, and the bacteria on the image looked like silkworm cocoons one by one, "It may be a type of plague bacteria, but I haven't seen this type." In other words, it is possible that it is a new type of plague bacterium that has been upgraded from the plague bacterium. ”

"What happens if you get infected with the plague bacteria?" Wei Chihong asked.

Lai Feng said that plague is referred to as plague, which is an acute infectious disease caused by Yersinia pestis, and is listed as a Class A infectious disease in China's "Law on the Prevention and Treatment of Infectious Diseases" because of its rapid spread, rapid onset and high case fatality rate. Plague bacteria can infect any tissue of the human body and multiply in the corresponding part to cause corresponding parts or systemic lesions, clinically according to the lesion site caused by the plague bacterium and the plague is divided into different clinical types, respectively: pneumonic plague, bubonic plague, septicaemic plague, ocular plague, intestinal plague, cutaneous plague, meningitidis plague and other types of plague.

The one in the package is supposed to be similar to pneumonic plague, which spreads the plague bacteria in the form of droplets in the air, and healthy people inhale it. After a person is infected with plague, it usually takes 3 to 5 days to become ill, and sometimes a pre-existing illness occurs in one day, and the patient suddenly has chills and shivering, fever, and body temperature above 39 °C; simultaneous dizziness, headache, rapid breathing, and pulse; Soon into a state of extreme weakness or coma. Pneumonic plague is more serious, with a rapid onset, with a high fever of 40~41 °C, followed by hemoptysis, shortness of breath, wheezing, dyspnea, and bruising of the face and limbs. If you don't have medication, you can't survive.

And this new type of plague bacterium may also cause more serious symptoms, that is, it can kill at any time.

Plague patients should be strictly isolated and treated locally. Treatment with streptomycin, gentamicin, chloramphenicol, tetracycline, and sulfonamides. Combination therapy with streptomycin and several other drugs or anti-plague serum may also be used in patients with severe disease. However, if you are infected with a new type of plague bacteria, it is not known whether previous treatments are effective.

Wei Chihong felt a chill rise up his spine, Li Shuhua directly came into contact with those powders, the probability of not being infected was very small, and the fate of him and Lai Feng was not yet known, the autopsy laboratory was a closed place, as long as he was in this space, the possibility of being infected could not be ruled out. There is a theory that during the plague epidemic in medieval Europe, nearly 30 million people died because the city was surrounded by walls. Why did the person who sent the package use such a method, and what was his purpose?

The air inside was silent and bleak, and the chill and twilight outside the window were aggravated at the same time.

Yu Chihong took a photo of the cover of the carton and sent it to Wanxing by mail, with the address of the courier company on it, as well as the signature of the sender - the Pied Piper in Flower Clothes.

"Pied Piper!" This name made Qiao Yan shudder suddenly, she knew the story of the Pied Piper in Flower Clothes, and once told Bei Bei to sleep when she was lulling her to sleep. The story comes from a Grimm fairy tale: legend has it that there was a plague in Hamelin, Prussia, Germany, killing and wounding so many that the inhabitants were helpless. Later, a powerful Pied Piper came and claimed to be able to eradicate rats. The leaders of the town promised to give him a rich treasure as a token of gratitude, and the Pied Piper used his flute to drive away the rats. But the unscrupulous leaders did not keep their promises and refused to pay him. In retaliation, the Pied Piper played the magic flute again, and the children of the village followed him, and he was never seen again.

Wan Xing hadn't heard this story, and after listening to Qiao Yan, he also felt a little crazy. At this moment, Wei Chihong sent another message, saying that the white powder sprayed out of the package was a new type of plague bacteria, and she was a little creepy. "Why is it so weird, the person who sent the package spread the plague, and called himself the Pied Piper."

"The story of the Pied Piper in Flower Clothes contains the philosophy of being a trustworthy person, and the prisoner took advantage of this story, is it to punish the untrustworthy?" Qiao Yan pondered for a long time, but there were so few clues that she couldn't analyze the portrait at all.

Lai Feng made a new discovery: there were two layers at the bottom of the carton, and there was a letter in the bottom layer, on which was the printed text: Do you like the gift I gave? Packed in this box was a new type of genetically modified and mutated plague bacterium, and after being infected, the original antibiotics were completely ineffective. Once the disease occurs, death occurs within an hour. ”

In addition, Lai Feng said that this carton is very well done, and the timing device makes good use of the chemical reaction, which is definitely a masterpiece of masters.

Wei Chihong asked how it was made, and Lai Feng explained in detail: put strong alkali detergent into the container in the box, and then put in aluminum sheets, and after the chemical reaction, hydrogen gas was produced, and the hydrogen gas filled the box and then broke through the box.

"The prisoner used the aluminum sheet to adjust the time after coating it with resin, and after calculating the volume of the box and the amount of melted resin, he could reverse the time and place when the prisoner made the device." Lai Feng calculated that it was in a radius of about five kilometers with the Public Security Bureau as the axis.

Lu Bin: They have already found the courier company.

"This is indeed our company's shipment." A courier confirmed that the package containing the plague germ was from their company.

Lu Bin asked if he remembered who sent the message.

"I heard that when I went to pick up the package, no one was there." The courier said, "After going to the designated place, there was money, a completed courier slip and a sealed cardboard box on the ground outside the door. The little brother who picked up the parcel was sent directly to you, and the little brother thought it was strange and came back to tell us. ”

Just as a young man in courier overalls and long black gloves walked in, the courier who was talking to Lu Bin summoned him and said that the police were investigating the strange express he had sent.

The young man's name was Chen Yong, he was of medium height and had a mediocre appearance. Chen Yong told Lu Bin that the courier company received a call from the sender at around 10 a.m., and then arranged for him to come to collect the mail. The other party added money and demanded that it be delivered to the public security bureau before 11:30 p.m. anyway.

Lu Bin went to the recipient location designated by the sender according to the address provided by Chen Yong, and found that it was just a vacant rental house, with two bedrooms, one living room and one bathroom, and the door was not even locked. The landlord said that after the previous resident moved out, it had been unoccupied for a long time, and he had been busy with business in the field recently, and he had no time to take care of it. In addition, the phone number required by the courier company to pick up the parcel was made from a public telephone, and the true identity of the consignor could not be traced whether it was the address or the telephone number.

"Inside the box was a criminal statement, and according to the contents of the statement, inside was a new type of plague bacterium." After analyzing the criminal statement, Qiao Yan believes that the criminal is carrying out the case in a planned way, and he thinks very highly of himself, and he should have excellent grades when he was a student. Judging from the signature of "The Pied Piper in Flower Clothes", the direct motive for committing the crime is purposeful revenge, which is related to "trustworthiness".

Thinking very highly of himself and having excellent grades when he was a student, the first thing Wei Chihong thought of was Deng Xiaolong. But he didn't understand what Deng Xiaolong's revenge had to do with "keeping promises", could it be related to the case seven years ago? There are all kinds of signs that Zhuang Yiqun and Ge Siqian

The murder is directly related to the research of the AC6 project seven years ago, so what role did Deng Xiaolong play in it?

Li Shuhua was placed in an isolation ward, where she had to stay until the results of the examination were available. Li Haoxun went to the hospital to visit Li Shuhua, and the two could only talk through the glass door. Seeing his niece's experience, Li Haoxun was heartbroken, but he couldn't do anything about it.

"How are Wei Chi and Lai Feng?" Li Shuhua's first concern is not about herself.

"They, like you, are waiting for the results of the examination. There is no problem at the moment, but you can't leave the autopsy room yet. Li Haoxun sighed abruptly, "Everyone is trying their best to investigate." What is known now is that the powder is a plague bacterium cultivated after a transgenic mutation operation. ”