Siheyuan: Starting from a Truck Driver

Lao Bai looked intently at a piece of stone that Cai Fangshun brought back, holding it lightly in his palm and examining it.

Upon hearing this, Lu Chengqing couldn't help but tremble and almost dropped the stone in his hand.

The cleaning process lasted for two long hours, until Lao Mao led Lao Bai to retreat out of the cave. Only then did the railway soldiers complete the large cleaning area instructed by Cai Fangshun.

Lao Bai looked like a neglected child, with the corners of his mouth slightly upturned and a look of disappointment.

The old cat caught a glimpse of Lu Chengqing's expression, shook his head helplessly and chuckled: "He was born with the talent to be a detective, but he has a good temper. Perhaps it was a wise decision for him to accept your invitation."

Lao Bai remained silent.

Everyone's attention was drawn to this sudden question.

If the interrogation hurts everyone psychologically, it would be a loss of the greater good.

We have all made extraordinary contributions.

"I see. This is a very difficult matter. You should do it immediately."

Yan Zi raised her hand and interrupted, "You have discussed this issue before."

Someone mentioned before that Cai Fangshun was concentrating on his work...

Do you think it's more interesting to see him busy with strange things in this environment?

After moving left and right and looking up and down for a long time, I gradually realized something.

The expansion work progressed quickly because of concerns that falling cement might injure others or even damage the rock at the top of the cave.

"You are all part of the railway family, and Cai Fangshun is no exception..."

"leave!"

"Why didn't Walter find any traces or evidence at the collapse site?"

"Yes!"

At that time, Lao Mao also thought of it, frowning: "Aiguo, the most important thing now is to catch Liu Chunjing, not to pursue those trivial matters. We need to focus on doing things and not be distracted."

It is undoubtedly extremely difficult to manually pry the cement on the top of the cave which is only more than ten meters high.

I turned to look up at the barren hilltop and saw that the cement was firmly adhered there.

At this moment, Cai Fangshun swung the crowbar vigorously and pried the stone twice. The rock that was motionless at first began to move slowly.

Cai Fangshun smiled and covered up the past, and sent Yan Zi to report the situation to Lao Mao.

He laughed and said, "It has to be fully revealed. If even a little bit is revealed, all the previous efforts will be wasted."

However, before he could finish his words, he was scolded by the old cat.

There may be no internal enemies in this incident, and the experts and members of the rock mass characteristics may have suffered unprovoked disaster.

"What it is?"

The old cat and his friends decided to stay outside.

In order to prevent collapse, steel bars were embedded in the cement layer to form a solid concrete wall that is quite stable.

Cai Fangshun carefully slid down the steel frame. With the help of the bright light, he slowly stretched out his palm, touched the surface of the cave top, and groped slowly.

“It’s not here, I found it!”

Lao Bai looked at everything in front of him with a puzzled look on his face, blinking his little eyes and asking: "Comrade is patriotic, what is he doing?"

This chapter is not finished yet, please turn the page to view the subsequent content!

In the dim cave, everyone focused on Li Aiguo's every move.

Isn't it just an ordinary stone? Why do we have to go through all the trouble to carry it down from the top of the cave?

"Company Commander Cai Fangshun, you are familiar with the terrain, come and take a look at this stone." Li Aiguo said with a smile as he handed the rock to him.

Captain Cai took the rock, shone the flashlight carefully, and identified its nature.

"The surface is dark green, and the cracks are mostly pentagonal... This is undoubtedly basalt..."

"No!" His eyes suddenly became sharp, and he tapped the rock lightly with his fingers, breathing slightly.

Hey, why couldn’t the female colleagues at that time accept direct thanks?

I understand that all phenomena that go against common sense often hide key clues.

This stone is extremely important in industry and is a controlled material. It is difficult for ordinary people to obtain it and one needs to have a special letter of introduction to purchase it from a chemical raw material store.

"The shadow can quietly obtain very small amounts of raw materials without attracting the attention of others. It is likely to be an engineer outside the chemical plant, or an elementary school chemistry teacher."

The review is a long and tortuous process, which is both a gradual ending and the beginning of a complex prelude.

At this point, I showed anger on my face: "Before liberation, you railway soldiers were also trying to find that formula, but you found that the results eventually fell into the hands of the enemy!"

Even though I was outside the outer tent, I could hear the news floating around.

In order to protect the formula, the old chemist was eventually forced by the Japanese army to jump into the river.

Several comrades who usually hold ordinary posts hurriedly get up from their comfortable beds in the dead of night and stick to their duties.

After hearing those words, the usually indifferent old cat's expression suddenly became serious.

"Not only that, it would be even more unusual if there was... an event like that that didn't happen."

"Have you ever heard of such a thing as 'rock swelling agent'?"

"Team leader, the core of the incident is still the incident involving the rock expansion agent."

Is there really nothing wrong with my brother? Bo Jiaqian wondered in her heart... and then made a decision.

Li Aiguo took the rock and explained with a smile: "That is... to them, the white part looks like dirt, but it is actually powdered activated carbon."

At present, Cai Fangshun arranged for me to visit my brother.

At first, Cai Fangshun didn't understand this situation.

Although he agreed verbally, Lao Mao's eyes were on Cai Fangshun.

These raw materials are all chemicals and are difficult for ordinary people to access. How could they be hidden in the rocks under the cave?

If the formula for a rock-swelling agent could be found, similar tiny leaks could be avoided.

Those words were like a ray of light, dispelling the gloomy mood of the colleagues in the investigation team.

"Comrade, are there any clues or signs about..."

Lao Dao, who occasionally showed his sharpness, suddenly became emotional and pulled Cai Fangshun into his arms.

The signal travels through the mountains in wired waves and reaches every corner of China.

“You just need to dig a big crack under the rock, introduce the rock expansion agent into water, stir it into a paste, and pour it into the crack.”

"The passengers in the carriage came from all corners of the country, their speech and behavior were different, and they were not very friendly."

"While we searched the fur shop, we did not find any instruments or books unrelated to chemistry in Liu Chunjing's residence."

He put his hand to his nose and sniffed it, and his expression suddenly became full of surprise.

Due to time constraints, Bo Jiaqian continued mysteriously: "According to this elderly professor, the preparation process of the swelling rock agent is often extremely difficult to keep secret, and this old chemist lost his left arm because of it."

"That ash doesn't come from obsidian."

"So you always hate chatting with those passengers in the carriage..."

"I tell you, after the Liberation, every old chemist tried to develop a special method..."

"Therefore, there is no sign of any shadow around Liu Chunjing."

After finding these chemicals under the rock wall several times in a row, her confidence grew stronger.

"Now...can I see your brother?"

This is really fair!

"Every time I met you, it was with an elementary school teacher, and the topic of conversation was..."

"Xiaoyanzi, please contact me as soon as possible..."

“He understands!”

As soon as he finished speaking, Captain Bo Jiaqian, who was deep in thought, nodded heavily.

His expression showed doubt, and his eyes were fixed on the rock: "But...how could such an expander exist on the rock?"

Cai Fangshun pointed to the top of the cave: "According to your estimate, to create a small-scale collapse like that, it would probably take a few kilograms of expansion agent."

"Comrade team leader, the formula is extremely important. Please make sure they find it."

“As the old saying goes, ‘To make good steel you must first optimize the slag.’ When smelting special steel for rails, steel mills add expansion agents to the steelmaking furnace to improve the properties of the slag.”

"At that time, you already have a question in your mind: why did a collapse actually happen in a place where it was very likely to collapse."

Why are the men the only ones standing there grinning?

The old cat nodded in agreement.

Before the news about the old chemist developing a rock expansion agent was made public...

"Yes!"

......

At that time, the Japanese were having a headache about mining, and they immediately sent out a search team to look for the old chemist.

"Patriotism, what on earth is going on?"

Since the team members were rescued, they have been subjected to gentle but in-depth interrogation.

Sir, there is more content to come. Please click on the next page to continue reading. There will be more exciting content to come!

"Mix the expander, aluminum powder, copper oxide, ferric oxide and activated carbon powder together to make the so-called rock expander."

Cai Fangshun continued: "You should know that you are a locomotive driver, driving trains around every day."

"This guy is really not easy to mess with!"

"After a few hours, the rock will fracture naturally, just like an explosion."

In this way, clues to the recipe gradually emerge.

Considering that the enemy can see through the use of expanders, the hero should not be indifferent to how to find the opponent.

"Zhang Lie is a mountain dweller himself. Even if he knows the formula, he can find ways to obtain chemical raw materials and prepare the expansion agent by himself."

"Brother Diquan, let him come with you."

As railway soldiers, they often face the work of excavating mountains. With some basic knowledge of rocks, they must understand the application of expansion agents.

"Many years ago, I visited the Anshan Iron and Steel Plant with the railway troops and saw with my own eyes that the workers used expanders to process ore."

"This is a swelling agent. This is their method!"

Captain Li Aiguo understood this instantly and looked up at Lao Mao.

There was a dark grey fine particle stuck to my fingers.

The shadows of the guards could still be vaguely discerned through the tents, and the surroundings were so quiet that only the sound of the throbbing heartbeats could be heard.

"Their shadows have general testing capabilities, so it's not that they have no way to obtain the raw materials for the expander."

"Comrade, the patriotic speculation is really untenable."

He placed the rock in his hand among the crowd, and while turning his back to the group, he held the rock and spoke loudly.

Liu Di looked around nervously.

Time is of the essence and these soldiers must work while ensuring their own safety.

Rescue troops camp.

Inside the tent.

Liu Di's whole body tensed up, and he tried hard to stand up by supporting himself with the stone in his hand.