The moment Lei Yunfeng raised his foot and kicked at the square piece of iron, a small stirring sound came from under the iron plate on the ground.

Fang Shichao, who studied mechanical manufacturing in Germany, immediately whispered: "The sound under the iron plate is the sound of the iron gourd stirring the iron chain, I know, the weight of this gate must be very large, the little devil uses the hinge to start the gate, that's right." ”

With the small sound of the hinges rolling, the heavy iron door was slowly opened, and there was another world inside.

Lei Yunfeng didn't wait for the gate to be opened, and kicked on the square iron block, and the iron gate immediately stopped sliding, and he ordered Wang Liang: "You stay in front of this gate, and you must be in the position." ”

He suddenly stretched out his two hands and pulled Fang Shichao and Su Xiaoyan into the gate respectively, and soon found the electric button inside, pressed it gently, and the door closed again.

When you open this gate and walk in, there is a passage of one meter five or six wide and two meters high, and the lights in the passage are dim, and it extends to the inside I don't know how far.

Walking in the passage, it feels eerie, like walking in the passage leading to the demon cave, and I can't help but get nervous.

"The three of us are divided into triangles and grope forward to sneak in, once we find the enemy, it is best not to be alarmed, we really can't avoid it, we must not shoot, we must destroy it with the power of thunder, and hide the corpse, and we must not reveal our identity."

Lei Yunfeng took the lead in the front, Fang Shichao and Su Xiaoyan followed closely behind the two wings, forming a triangular battle formation and walking quickly towards the passage.

Walking in about fifteen meters, the passage is wide, and even the lights feel brighter and brighter.

Lei Yunfeng, who was walking in front, suddenly flashed to the right quickly, and the whole person was motionless on the wall of the cave, and Fang Shichao and Su Xiaoyan, who were closely behind, immediately stuck to the wall alertly, holding guns in their hands and staring closely ahead.

Two guys in chemical protective suits walked from the front, and as they walked, they whimpered: "Our test has finally made progress compared to the last one, if nothing else, if the 593rd test is successful tomorrow, we will be able to create a bacteriological bomb that kills people invisibly, which is really great." ”

Another guy said: "The laboratory is repetitive, the time is pressing, and if the experiment is not completed, the director will not be able to explain to the peak." ”

Lei Yunfeng and two other Japanese researchers wearing chemical protective suits walked to the side and suddenly strangled the neck of a devil, only to hear a 'click', and the devil's neck was twisted.

Fang Shichao and Su Xiaoyan received Lei Yunfeng's gesture of preparing to make a move, and when Lei Yunfeng suddenly made a move, they threw another devil technician to the ground, strangled his neck and suffocated to death.

"You two immediately change into chemical protective suits of Japanese researchers and hide these two little devils."

Lei Yunfeng said as he helped take off the chemical protective suit of a little devil, quickly helped Su Xiaoyan put it on, and then dragged the strangled devil into a dark room in the passage, and quickly walked out again.

"Shopkeeper Yun, Ah Yan and I will go first to find out the situation and then send you a signal, can you go in again?"

"No, you two go ahead, I'll follow closely, use your cover, I'll get another set of chemical protective clothing to wear on my body, don't be verbose, keep moving forward, don't look back."

Lei Yunfeng used Fang Shichao and Su Xiaoyan to walk in front as a cover, changing positions from time to time and trying not to expose himself.

But Fang Shichao's height is too short, how can two one-meter-seven people block the one-meter-eighty-seven Thundercloud Peak behind him?

In order not to be discovered by the Japanese army researchers inside, Lei Yunfeng slowed down and stayed a little farther away from the two, so that he could not be discovered by the devils who suddenly appeared inside.

Fang Shichao and Su Xiaoyan, who were walking in front, felt that the more spacious they were inside, and when they walked to a workshop that was suddenly spacious and square like a hall, they found that the workshop in this hole was indeed very large.

The ground and the sky close to the passage are relatively low, but there are also two meters three, and it is a two-story small building extending five meters inside, although there are many researchers in the whole workshop, but they are doing their own work in their respective positions, which seems to be orderly.

Lei Yunfeng, who was hiding at the entrance of this big workshop, saw Fang Shichao and Su Xiaoyan walking into this big workshop, and he was at a loss and hesitated, not only nervously did he really want to rush up and tell them to be natural, as long as he didn't stop moving, he wouldn't attract the attention of the researchers who were concentrating on their work.

Just when Lei Yunfeng was in a hurry, someone suddenly patted him behind him, and said in a stern tone: "What are you doing, why don't you walk in without wearing a chemical protective suit, aren't you afraid of being infected and dying?" ”

Lei Yunfeng slowly turned around and saw a guy in a chemical protective suit, who came out of the corner of the passage behind him, standing in front of him and reprimanding him.

Not only did he push the devil into the passage with a friendly smile, but he suddenly strangled the troubled bastard.

He quickly changed into a chemical protective suit, dragged the little devil into the hidden room reserved in the passage, walked quickly to the big workshop, and caught up with Fang Shichao and Su Xiaoyan, who were struggling and didn't know where to go, and whispered: "Don't be nervous, follow me." ”

Fang Shichao and Su Xiaoyan, who were hesitating, were suddenly pushed by a guy wearing a chemical protective suit, so frightened that the two of them almost fell to the ground one by one.

Lei Yunfeng quickly glanced at the first floor of the shop floor and found the researchers who were fiddling with bottles and cans, and concluded that they were just the low-level technicians of some elementary research projects.

In order to completely destroy the Japanese army's bacteriological weapons research base, it is necessary to find the core figures of this biochemical research institute, and only by killing them and causing the Japanese army's senior research experts to disappear can this biological and chemical weapons research base be fundamentally destroyed.

He whispered to Fang Shichao and Su Xiaoyan, who were following closely behind: "You two pay attention to what I say, we will go up to the second floor in a while, I will conclude that the second floor is the research center of the Japanese army, you two guard the stairs on the second floor, and I will clean them up." ”

"Cloud shopkeeper, I will guard the staircase, and Ah Yan will act with you, so that you still have a helper, and if necessary, Ah Yan can also ........"

"Obey the order, go deep into the enemy, if you want to complete the task, it is not a large number of people, but a temporary decision to make a ruthless move, as long as you two can hold the staircase on the second floor, I will successfully complete the core of destroying the Japanese army's biological and chemical weapons base."

Lei Yunfeng climbed to the second floor without looking back, Fang Shichao and Su Xiaoyan followed closely behind, and when Lei Yunfeng just climbed to the second floor, he was blocked at the staircase by a devil wearing a chemical protective suit and holding a German-style submachine gun.

"What are you doing, why did you go up to the second floor without permission, don't you know that the second floor is the most confidential work place for experts? Bastard, go down quickly, or I'll kill you. ”

"Oh, I'm a senior liaison officer sent by General Toshio Hisano to meet with the two experts, do you dare to stop me from going up to the second floor? In the event of an emergency, you will die first. ”。

"What? Yours is an envoy sent by General Toshio Kuno? Why didn't I get an order? I suspect you are extremely dangerous people, and if you were to force your way up to the second floor, I would kill you right now. ”

"You are so bold, you don't need to kill me first, Lao Tzu will kill you now, and then you will receive the order of the special high class after you die." Lei Yunfeng rushed up and suddenly made a move.