Lianhai Center for Disease Control and Prevention, Laboratory.

Wang Xiaoxiao and Lu Li conducted an emergency test on the patient's specimens collected from the hospital, and the results came out quickly.

The metabolites of dichloroethyl sulfur, isethionic acid and glycolic acid, were detected in the urine of all five patients.

The five patients were indeed poisoned by mustard gas.

Lu Li took the results of the experiment and showed them to Gu Yanan.

Gu Yanan notified the hospital as soon as possible, and at the same time began to arrange the next step of the flow investigation.

The work of the flow investigation is to go to the miasma valley in the Qingcheng Mountains.

Preparing protective clothing and gas masks for entering the mountain, Gu Yanan prepared to go to the Qingcheng County Center for Disease Control and Prevention first to call local disease control personnel to help them enter the mountain together.

Zhou Jie has rich experience in the field of chemical poisoning, so he also brought Zhou Lao with him on this trip to Qingcheng Mountain.

Wang Xiaoxiao took the initiative to ask to follow out of the scene.

Considering that Wang Xiaoxiao is a local of Qingcheng Mountain and is familiar with the local customs and geographical environment, Gu Yanan decided to bring Wang Xiaoxiao.

Gu Yanan, Zhou Jie, Lu Li, and Wang Xiaoxiao drove the on-site flow shunting of the CDC to the Qingcheng County CDC.

On the way, Wang Xiaoxiao urgently used her mobile phone to check the relevant knowledge of mustard gas and poisoning from the Internet.

Mustard gas, the common name for dichloroethyl sulfur, is named because it is volatile and has a mustard or stinky garlic smell, and is mainly used in organic synthesis of drugs, and is notorious for its widespread use in poisons.

Mustard gas is a representative of erosive poison, the skin is one of the most important target organs of poisoning, and the skin can cause erythema, edema, blistering, erosion, necrosis after skin contact with the poison, and is easy to cause secondary infection, and slow wound healing.

After a large dose of mustard gas is absorbed through the skin, respiratory tract and digestive tract, it can cause systemic absorption poisoning, so the clinical manifestations of mustard gas poisoning are diverse.

Mustard gas is by far the most produced, stockpiled, and even used chemical weapon, accounting for more than eighty percent of known chemical warfare casualties, and is known as the king of poisons.

Pure mustard gas has a colorless, oily liquid appearance with a garlic or mustard smell, and industrial products are yellow or dark brown or even black due to different degrees of oxidation.

After contact with the skin and mucous membranes, mustard gas remains on the surface of the body for 2 to 3 minutes, at which time it can be removed with disinfectant, and most of it is absorbed after 10 to 15 minutes.

After the mustard gas is inhaled into the body, about 12% of the amount will be fixed locally, causing local damage, and the remaining 80% of the amount will enter the blood circulation and be distributed throughout the body, causing systemic damage.

The free state of mustard gas, in the blood generally does not exist for more than half an hour, the absorption effect is mainly due to its fat-soluble diffusion passive absorption, mustard gas in the body and a variety of biological macromolecules in the body reaction to form various metabolites, and finally through the urine excretion out of the body.

So far, there is no specific anti-poison drug for mustard gas, and only symptomatic treatment measures can be taken.

In addition to being a potent erosive agent, mustard gas is also on the World Health Organization's list of a class of carcinogens.

Wang Xiaoxiao called up a series of photos of mustard gas poisoning from the Internet.

Looking at the tragic condition of the human beings tortured by the mustard gas poison in the photo, Wang Xiaoxiao felt a chill in his heart.

What makes Wang Xiaoxiao feel even colder is that this chemical agent may be hidden in his hometown, and he must find it, otherwise more people may be victimized.

——

At the foot of Qingcheng Mountain, Qingcheng County Center for Disease Control and Prevention.

Before Gu Yanan came, he had already talked to people from the Qingcheng County Center for Disease Control and Prevention on the phone, and gave a general introduction to the plan of this operation.

The Qingcheng County Center for Disease Control and Prevention was in charge, and a local guide who was familiar with the geographical environment of Qingcheng Mountain was found, and this guide took the CDC people into the mountainous area.

The guide is an almost 60-year-old man, although he is almost 60 years old, but he is very healthy, lean and capable, and he has experienced the vicissitudes of the world at a glance.

The guide's surname is Wang, called Wang Jianjun, is a retired worker of the local forest farm, after retirement, he often moves in Qingcheng Mountain, sometimes goes to the mountains to dig bamboo shoots, sometimes goes to the mountains to catch wild things, in short, he is very familiar with Qingcheng Mountain, and the people of Qingcheng County Center for Disease Control and Prevention call him Master Wang.

Master Wang was very talkative, and when the people from the Qingcheng County Center for Disease Control and Prevention found him, as soon as he explained his intentions, Master Wang agreed.

Master Wang said: "I know the place you said, it is in a valley deep in the Qingcheng Mountains, our locals call it the Misty Valley, and the surrounding forest is called the Misty Forest, which is very evil, and there is indeed a miasma, we locals will not go to the fog, and if you want to dig bamboo shoots, you will not go to the vicinity of the Misty Valley, and those who can be far away from it will be far away from it, more than 20 years ago, some villagers went in and never came out, and then they sent people to look for it, and the people who went in to find it did not come out, and then this matter was over. The villagers said that the disappeared people were inhaled and fainted inside, and were later eaten by wild beasts in the mountains, but I speculate that they may have gotten lost in it and did not come out, and starved to death inside. ”

Gu Yanan, "Then you dare to go in with us?" ”

Master Wang patted the protective equipment given to him by the county CDC, as well as the GPS positioning system, and said with a smile: "It's not because your equipment is advanced, there are so many people together, I also want to go in and see what's going on in the Misty Valley." ”

Gu Yanan asked: "What do you think of the injuries of the five survey personnel of the Binhai Tourism Development Company?" ”

Master Wang: "They just came, I don't know the situation in Qingcheng Mountain, I only know that if they break into the misty forest, they must have broken into the misty forest and inhaled the miasma in the misty valley, fortunately, they are not badly equipped, and they are not lost in the valley, otherwise they can't even get out of the misty valley, how can they have the opportunity to go to the hospital for treatment." ”

After learning about the general situation with Master Wang, Gu Yanan, Lu Li, Wang Xiaoxiao, and Zhou Jie from the Municipal Center for Disease Control and Prevention, as well as two on-site dispatch personnel from the Qingcheng County Center for Disease Control and Prevention, plus the guide Master Wang, and a group of seven people prepared to walk into the mountain.

At the foot of Qingcheng Mountain, he met an unexpected person.

Nan Hanfei took three policemen, as well as a local man in his fifties, who were also preparing to enter the mountain.

The two groups of people looked at each other, and several people exclaimed at the same time: "Why are you here?" ”

In addition to Nan Hanfei and Gu Yanan, there were also Master Wang and a local man in his fifties from Nan Hanfei's side.

Master Wang and the man clearly knew each other.

Master Wang: "Li Dazhu, why are you here?" Still with the police? ”

The man in his 50s, known as Li Dazhu, said: "I went into the mountains this morning to dig bamboo shoots and found a body in the mountains. ”

The man glanced at Gu Yanan and Master Wang's dresses again, and asked in surprise, "Wang Jianjun, what are you making trouble about?" Dressed like someone from Resident Evil. ”