Wan Lin's ten-day vacation was spent in the curiosity and waiting aroused by the watch incident. On the morning of the tenth day, Lingling and Xiaoya drove listlessly to the military region guest house and called Wan Lin and a few people to come down and prepare to return to the station.

Wan Lin, Zhang Wa, Dali, and Cheng Ru walked out of the door of the military region's guest house with their heads down. Zhang Wa complained to Wan Lin as she walked: "It's hard to take a few days off, you have to come up with some watch mystery, so that everyone has nowhere to go, all of them are wasted on reasoning and solving cases, and my head is big."

As soon as a few people stepped into the car door, Wan Lin's mobile phone rang, Wan Lin quickly took out his mobile phone and glanced at the "Li team", and quickly pressed the answer button: "Urgent task, return immediately!" Li Dongsheng ordered loudly in the microphone.

When several people heard the word "task", their eyes widened. Lingling, who was driving, didn't wait for Wanlin and a few people to sit down, and as soon as she stepped on the accelerator, the car rushed out with the roar of the engine.

Wan Lin sat in the speeding car and urged Xiao Ya, who was sitting in the passenger seat: "Quickly ask Dean Wan what the situation is?" Xiaoya took out the phone and called her father.

Unexpectedly, Dean Wan's answer was very simple: "The Military Commission has an order, you should immediately return to the unit and stand by," and nothing else was revealed.

Xiaoya put away the phone and muttered a sentence of "old-fashioned" in her mouth. Cheng Ru said with a smile next to him: "This is a qualified veteran, no matter whether he is close or not, he will not reveal a word that should not be said", Lingling also said: "My father is like this, and he can't get any information from their mouths." This is the case with their generation."

Several people drove back to the base at a rapid pace. Lingling drove the car directly to the entrance of the special operations brigade department, and several people jumped out of the car and ran to the door of Li Dongsheng's office: "Report", "Come in" Li Dongsheng shouted in the office.

Several people pushed the door and entered the room, Li Dongsheng sat at his desk, the projector connected to the laptop on the table, and typed a striking military map of the northeast forest area on the opposite wall. Li Dongsheng ignored the few people who walked in, but continued to stare at the map on the wall thoughtfully and intently. Several people saw the map of the Northeast on the wall, glanced at each other, and smiled knowingly, they knew that this was exactly where Dean Wan had an accident back then.

Li Dongsheng stared at the map for a while before turning his head, seeing the happy eyes of several team members, he asked coldly, "What are you happy about?" I tell you that this mission is more dangerous than any previous one we have ever undertaken. What is there to rejoice in".

Zhang Wa walked to the captain's desk and asked with a hippie smile: "Captain, is there anything else we are afraid of?" We haven't seen anything like that. What are your tasks? Li Dongsheng raised his hand and knocked him on the head, got up and stood up, and said with a stern expression: "Go back and prepare immediately, in the afternoon, the anti-chemical warfare experts of the military region will come over to give you a lesson, you go back and prepare."

In the afternoon, a major of the anti-chemical regiment of the military region came to the base of the special operations brigade in a truck. Li Dongsheng called the commandos to move several large boxes from the truck, and then summoned everyone to the conference room to receive anti-chemical training.

Li Dongsheng first introduced Yang Gongquan, a major combat staff officer of the anti-chemical warfare regiment. Staff Officer Yang did not give too much theoretical knowledge to the commandos, but only focused on the matters that should be paid attention to in anti-chemical warfare operations, and focused on explaining the application of anti-chemical warfare equipment and the methods of using detection equipment.

Staff Officer Yang asked each member of the team to take out a set of individual chemical protection uniforms from the box and instructed everyone to put them on. Everyone put on thick camouflage chemical protection suits and strange-looking anti-gas helmets, you look at me, I look at you, they are all happy, Xiaohua is even more curious, jumping from this person's shoulder to another person's shoulder, sniffing everyone's scent.

Seeing that everyone looked at each other's strange appearances and laughed, Staff Officer Yang said sternly: "Don't laugh, I know that you are all special forces who have experienced a hundred battles, and you are all crawling in the rain of bullets." But you must remember that bacteriological warfare and nuclear radiation are a battlefield where the enemy cannot be seen, and without the protection of chemical protective clothing, you don't even know how you sacrificed! All I advise you to wear your chemical protective suits during this mission, which is your first line of defense. Everyone must be careful. Okay, now all of you wear chemical protective clothing to the training ground and run 5 kilometers to familiarize yourself with the way of exercising in chemical protective clothing."

Everyone ran out in turn, only Wan Lin stood straight in place and stared thoughtfully at the little flower in front of him. "Wan Lin, what are you doing?" Li Dongsheng shouted from the side. "Oh" Wan Lin suddenly noticed that Li Dongsheng was calling him, and quickly replied, "I'm thinking, what should Xiaohua do?" ”

Li Dongsheng suddenly woke up when he heard Wan Lin's words, "That's right, what about Xiaohua?" "Xiaohua is indispensable in many bloody battles, if Xiaohua does not participate, Li Dongsheng really doesn't know how to command the battle now.

He turned his head to the staff officer: "How can I protect this team member?" "Which player?" Aren't they all here?" asked Staff Officer Yang in surprise.

"That", Li Dongsheng pointed to the little flower on the ground who looked up at the sheep staff officer, "It?" The sheep staff officer paused for a moment. Underestimate it? It's Lieutenant Hua," Wan Lin replied in an accentuated tone when he saw the surprised look of the Yang staff officer, he couldn't let people look down on Xiaohua.

Staff Officer Yang widened his eyes and turned his head to look at Li Dongsheng, who nodded solemnly. Staff Officer Yang took a closer look at Xiaohua and said a little helplessly: "I don't know how to protect it."

Li Dongsheng took a closer look at the protective clothing on Wan Lin's body and said, "Can you remove a protective clothing and change it for Xiaohua?" The sheep staff officer replied, "You can try it, I'll try it at night......

The commandos came back out panting after running 5 kilometers outside, and quickly took off their protective clothing, Lingling said loudly: "It's really hard to wear this thing, it's too inconvenient to move, it's hot to death", Yang Staff Officer smiled and said: "This is a breathable protective suit, and you are not allowed to wear an isolation protective suit, if you run 5 kilometers back in an isolation protective suit, you can pour sweat in your shoes." Don't worry, just get used to it slowly, and from tonight onwards, everyone will wear it to bed. You have to get used to wearing it."

Everyone looked at the protective clothing they had just taken off and shouted in unison: "I've got my mother!" ”

Staff Officer Yang smiled and continued to explain the use of personal protective equipment such as anti-poison ointment, personal disinfection box, and disinfectant lotion.

For three consecutive days, Staff Officer Yang trained everyone on the relevant anti-poison and anti-radiation knowledge. On the morning of the fourth day, Li Dongsheng summoned all the commandos to the conference room for operational deployment.

He looked around at the five anti-chemical warfare soldiers brought by the members of the "Leopard Commando" and the sheep staff officer, and said: "Everyone may already know the ins and outs of this mission. Let me briefly introduce the situation: More than 40 years ago, when our army and police were inspecting a cave in the Changbai Mountains twice, dozens of people entered the cave and died. It is reported that gunshots occurred in the cave at that time, and the cave contained radioactive poisons, the specific chemical composition of which is unknown. Based on the fierce fighting that took place at the time, it is speculated that there may be an unknown creature inside the cave. That's why we commandos were sent in".