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

Fang Shichao, who had studied mechanical manufacturing in Germany, immediately whispered: "The sound made under the iron plate is the sound of the iron gourd stirring the iron chain. I know that the gate must be very heavy. The Japanese used their hinges to start the gate, which is right."

As the hinges with very small sound rolled, the heavy iron door slowly opened, and there was another world inside.

Leiyun Peak didn't wait for the doors to be opened, and kicked the square iron block. The iron gate immediately stopped sliding. He ordered Wang Liang: "You should guard this gate and be in a position."

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

When you open this gate, you will find a passage that is 1.56 meters wide and two meters high. The lights in the passage are dim and you can't tell how far it is to extend into it.

Walking in the passage gives people the feeling of being gloomy as if walking in the passage leading to the demon cave, you can't help but feel nervous.

"The three of us divided into triangles to hike forward and sneak in. Once we find the enemy, it is best not to be alarmed. If we really can't avoid it, we must never shoot. We must use thunder to eliminate it, and hide the body well, and never expose our identity."

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

It was about fifteen meters into the walkway, and the passage became spacious and even the lights felt brighter and brighter.

Lei Yunfeng, who was walking in front, suddenly flashed to the right, and he stuck his whole body against the cave wall without moving. Fang Shichao and Su Xiaoman, who were following behind, immediately stuck on the wall alertly, staring at the front with guns in their hands.

Two guys wearing chemical protective suits came from the front and said as they walked: "We finally made progress compared to the last time. If nothing unexpected happens, if the 593rd test is successful tomorrow, we can create an invisible bacterial bomb. It's great."

Another guy said: "The laboratory is repeated and time is tight. If the experiment cannot be completed, the director cannot explain to the peak."

Lei Yunfeng and two Japanese researchers in chemical defense suits walked to their side and suddenly strangled a Japanese neck. With a "click" sound, the Japanese's neck was twisted.

Fang Shichao and Su Xiaoman received the gesture that Lei Yunfeng was about to take action. When Lei Yunfeng suddenly took action, they threw another Japanese technician to the ground, strangled their necks and suffocated them to death.

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

Lei Yunfeng said as he helped take off a Japanese anti-chemical suit, quickly helped Su Xiaoman put it on, and then dragged the strangled Japanese into a dark room in the passage and quickly walked out again.

"Shopkeeper Yun, Alan and I will go in first to find out the situation before sending you a signal. Can you go in again?"

"No, you two are ahead, I will follow you immediately. Using your cover, I will get another set of chemical protective suits on my body. Don't be too verbally speaking, keep moving forward, and never look back."

Lei Yunfeng walked in front with the help of Fang Shichao and Su Xiaoman as a cover, and tried to change positions from time to time to try not to expose himself.

But Fang Shichao is too short. How could two 1.7 meters tall block the 1.87 meters tall Thunder Cloud Peak behind him?

In order not to be discovered by the Japanese researchers inside, Lei Yunfeng slowed down and moved a little further away from the two of them, so that they could not be discovered by the Japanese who suddenly appeared inside.

Fang Shichao and Su Xiaoman walked in front, the more they walked in, the more spacious they felt. When they walked to a workshop that was suddenly spacious and square like a hall, they found that the workshop in the hole was indeed very large.

The ground close to the passage is relatively low but it is two meters and three meters above. It extends five meters inward and is actually a two-story building. Although there are many researchers in the entire workshop, they are all doing their own work in their respective positions, which seems to be orderly.

Hiding at the entrance of this large workshop, Leiyun Peak, saw Fang Shichao and Su Xiaoman walking into this large workshop, he was at a loss and hesitating. Not only was he so nervous that he really wanted to rush up and tell them to be more natural, as long as he didn't stop walking, it would not attract the attention of researchers who were working attentively.

Just when Leiyun Peak was anxious, someone suddenly patted him behind him and said in a stern tone: "Your work, why come in without wearing chemical protective clothing? Aren't you afraid of being infected to death?"

Lei Yunfeng slowly turned around and saw a guy wearing chemical protective suit. He came out of some corner of the passage behind him and was standing in front of him and scolding him.

Not only did he friendly and accompanied the smile on his face to push the Japanese into the passage, but he suddenly strangled the troublesome bastard to death.

He quickly changed into chemical protection suits, dragged the Japanese into the hidden room reserved in the passage, walked quickly to the large workshop, and caught up with Fang Shichao and Su Xiaoman who were slow to go and said in a low voice: "Don't be nervous, come with me."

Fang Shichao and Su Xiaoman, who were hesitating, were suddenly pushed by a guy in a chemical protective suit, and they were so scared that they almost fell to the ground.

Lei Yunfeng quickly scanned the workshop on the first floor and found researchers fiddling with bottles and jars, and concluded that they were just the bottom-level technicians of some primary research projects.

If you want to completely destroy the Japanese military's bacterial weapon base, you must find the core figures of this biochemical research institute. Only by killing them and causing the disappearance of senior Japanese research experts can you fundamentally destroy this biochemical weapon research base.

He whispered to Fang Shichao and Su Xiaoman who were following him: "You two should listen to me. We will walk up the second floor later. I will determine that the second floor is the Japanese research center. You two should guard the stairs upstairs on the second floor. I will clean up them."

"Shopkeeper Yun, I will guard the stairs. Ah Man will act with you. In this way, you will have a helper. Once you need it, Ah Man can…..."

"Abide by orders and go deep into the enemy. If you want to complete the task, it is not a large number of people, but a temporary decision and ruthless method. As long as you two can guard the stairs on the second floor, I will successfully complete the core of the Japanese R&D and Chemical Weapons Base."

Lei Yunfeng climbed to the second floor without looking back after saying that, Fang Shichao and Su Xiaoman followed closely behind. When Lei Yunfeng climbed to the second floor, he was blocked by a Japanese man wearing chemical defense suit holding a German submachine gun at the entrance of the stairs.

"Why did you go up to the second floor without authorization? Don't you know that the second floor is the most confidential work place for experts? Bastard, go down quickly, otherwise I will kill you."

"Wow, I'm the senior liaison officer sent by General Kuino Toshio of the Special High School to meet the two experts. Do you still dare to stop me and not let me go up the second floor? Once an emergency occurs, you will die first."

"What? Yours is the special envoy sent by General Kuino Toshio? Why didn't mine receive the order? I suspect you are extremely dangerous people. If you want to force up the second floor, I will kill you now."
Chapter completed!