I am the cook, but I am Li Er's son-in-law

But no matter how anxious he was, this emotion was of no help in solving the case.

Zhou Xiaosan pondered for a long time, and the case became a knife hanging in his head.

Helpless, he thought again, and naturally thought of Yin Xuan.At this time, there seems to be no other way except to ask his own Dalang for help.

When Zhou Xiaosan arrived at the restaurant, he said hello to He Ri, ordered two dishes casually, and waited until they were all cleaned up before he stood up, bowed to Yin Xuan in a respectful manner, and began to greet him.

"Da Lang, I have encountered some problems recently." Zhou Xiaosan was respectful as always, and he did so from the bottom of his heart.

Yin Xuan nodded: "Speak."

Zhou Xiaosan repeated the predicament he encountered with Yin Xuan, and at the end, he sighed heavily: "I don't know how they did it."

Yin Xuan stretched his waist, waved his hands, and said softly: "I haven't seen the scene, so I can't analyze it for you."

Zhou Xiaosan was not discouraged, but quietly waited for Yin Xuan's next words.

Sure enough, Yin Xuan paused, and continued: "However, I can give you some ideas."

train of thought?

Zhou Xiaosan nodded.

"Remember when I taught you reasoning, I once said that the soil in different places is actually a different thing?" Yin Xuan thought for a while, and after confirming that he had taught Zhou Xiaosan these things, he asked back. .

Zhou Xiaosan nodded again: "Da Lang taught, dare not forget."

Yin Xuan waved his hand: "Go, have been hanging out in the court for so long, and now you have become so polite?"

Zhou Xiaosan chuckled: "Da Lang, I also thought about the soil, but I didn't find any unusual soil near the public school."

Yin Xuan raised his hand and pointed to the sky: "It hasn't rained these days, so what's the use of this?"

"I tell you this because I want to talk about some of the most subtle places, which may be where the clues lie."

After saying that, Yin Xuan paused, got up and searched for some branches that Yin Lulu hid in the backyard—they were all in excellent condition, all of them were straight, without even a scar.

"Take this branch as an example."

Yin Xuan randomly picked up one and folded it casually: "Look, his marks after breaking it are like this."

Then, he put the branch aside, picked up the other one, motioned Zhou Xiaosan to hold one end, and held one end himself, and then used the other hand as a palm knife, chopped it down fiercely, and the branch broke in two .

"You guys, after the split, his marks look like this."

Yin Xuan picked up another wrist-thick one, twisted his hands casually, and the branch rolled up like a twist, and was twisted by Yin Xuan in a short while: "Look, after twisting, his marks are like this of."

Zhou Xiaosan felt his scalp go numb.

It is not an easy task to break a branch of this thickness, let alone break it, let alone twist it like a towel like my own Dalang.What kind of strange power is Dalang himself?
"The principles of this thing can also be applied to the wood used in public schools."

Zhou Xiaosan was silent for a moment.

What Dalang said, of course, cannot be that someone is idle and has the ability to twist all the building materials of the public school into twists.That should be hinting to himself through this thing.

After thinking for a while, he suddenly realized, and said in surprise, "Dalang, do you want to say... If you burn building materials in different ways, the traces of their final burnt will be different?"

Yin Xuan nodded slowly.

Although I have taught Zhou Xiaosan some reasoning knowledge, but... his basic knowledge is still too poor, and some seemingly simple things cannot be thought of at the first time.

Zhou Xiaosan bowed to Yin Xuan to thank him.

Afterwards, he returned to the Ministry of Criminal Justice non-stop, recruited some people secretly, and started to experiment according to the knowledge he had obtained from Yin Xuan.

He wants to try out the difference in the wood burned in different environments.

People also took the burned wood that was stored as evidence and used it as a comparison material.

But what puzzled Zhou Xiaosan was that the traces of burning still couldn't match.

Is it because of the wood?It is clear that the same kind of pine wood is used. Could it be that different places of production will cause such a big gap?
Zhou Xiaosan thought about it, and asked someone to fetch a piece of wood from the public school site, and planned to use the wood there as a test object, to try what could make the wood burn like that.

Can…

When the building materials from the public school were transported back, and just did an experiment, Zhou Xiaosan discovered something was wrong.

The wood brought back from the public school burns so fast that it almost burns quickly with a flame.

Can wood be so easy to ignite?

However, after burning, the flames are easy to extinguish, which is why the next few fires did not cause too much damage.

Why is there such a big difference between the wood I got from the public school and the wood I found myself?
Zhou Xiaosan thought about the time and asked for the news.

After the wood used in the building is felled, it has to go through the process of soaking in tung oil for a period of time, ranging from ten days to three months.

This thing is very good for wood. It will form a protective film when attached to the surface of wood, so that the wood can maintain good stability, and there will be few problems of drying and deformation.

Moreover, although the word "oil" is hung, the wood soaked in tung oil will not catch fire so easily, and the ignition point of this thing is quite high.

But if there is a fire, the burning fire will be extremely large and difficult to stop.

The piece of wood I brought from the public school didn't look like it had been soaked in tung oil at all.

But it clearly has traces of being processed.

Zhou Xiaosan had a terrible idea in his mind, he pursed his lips, widened his eyes, took the untreated pine wood, and started to experiment.

Three days later, at the meeting.

Complete the previous process according to the ritual.

Zhou Xiaosan immediately stood up, cupped his hands and said, "I have something to say."

"Say." Li Shimin nodded and waved his hand.

Zhou Xiaosan took a deep breath: "I have recently investigated the public school fire case, and have uncovered some clues."

Li Shimin stood up.

"I found out that the wood used in the public school does not conform to the process." Zhou Xiaosan said sharply.

The people from the Ministry of Industry immediately turned their heads and looked at Zhou Xiaosan with shock in their eyes.

Wait a minute... what's going on here?

Is it necessary to put the hat of the fire on the head of their Ministry of Industry.

"Oh? What's not in line with the procedure?" Li Shimin asked indifferently.

Zhou Xiaosan immediately replied: "Building materials need to be soaked in tung oil for processing, but...I found out that the building materials used in public schools are not soaked in tung oil."

Saying that, he paused.

"It's kerosene."