The investigations of both parties have progressed in stages at the same time, which should have been a joyful thing.

But this double progress did not bring double excitement, but endless emptiness.

Because whether it was the sodium carbonate found by Tang Ze or the alibi about Yamamura Kage found by Gongchang Criminal, they all pointed the prisoner to a prisoner with professional knowledge.

It is equivalent to saying that Tang Ze judged that what the other party was telling the truth and that he was not a prisoner after interrogating Shancun Yinghou was confirmed.

While the guy was a potentially happy criminal, he wasn't really a criminal.

Of course, although the other party cannot be arrested just because the other party has dangerous thoughts, the necessary follow-up is still needed.

After Tang Ze finished exchanging information with the other party, he reminded the Gongchang police department to ask him to send someone to pay more attention to the other party, and then hung up the phone.

"What are we going to do next?"

Seeing that Tang Ze finished the phone call, Takagi said with some distress: "Although we know that the fire was caused by a substance containing sodium carbonate, it is very likely that the suspect is also a professional.

But there are too many eligible candidates, and we have no way to start now. "

"The suspects can be eliminated slowly. For now, let's start from the channel."

Tang Ze thought for a while and said: "After all, even if the fire is caused by sodium carbonate, all the substances in it cannot be the same.

If we can find the same fire source as the collected samples, then the channel has been identified, which should narrow the scope to a certain extent. "

"Sodium carbonate is not such an easy thing to get." Takagi suddenly said after hearing this: "It is indeed a good way to start from this aspect."

"Actually, it is very simple for professionals. As long as there is some kind of acid and glycerin, nitroglycerin can be produced."

Tang Ze said: "For example, 50% of the ingredients in enemas are glycerin, which can be said to be very easy to buy.

After a while we will go to the pharmacy, buy all the enemas on the market, and then compare them with the sodium carbonate in our hands after experiments.

As for acid, which is not so easy to obtain, it seems that the prisoner has it on hand, so we can replace it with several common acids. "

"So, do you need to bother Mr. Saito?"

Takagi looked at Tang Ze and said, "You just said to let him rest, are you already planning to let him take on this huge workload?"

"That's not true." Tang Ze waved his hand and said, "For such a simple comparison task, just leave it to the subordinates. Let's go and buy an enema first."

Taking the funds to travel around Tokyo, after buying all the brands of enemas, the two returned to Kesouyan and began to squeeze the labor force of their employees.

Fortunately, Kesouyan is now operating well, and its advanced technology has provided logistics services for the Metropolitan Police Department very well, and personnel are recruited again and again.

Coupled with the task assigned by Tang Ze, his immediate boss, the efficiency is still very high.

The brute force method quickly produced results with the cooperation of the crowd tactics, but what was disappointing was that the various burning residues they tested were completely different from the fire scene.

Although it is true that sodium carbonate is generated, other trace impurities are completely different.

These trace impurities are equivalent to a kind of "fingerprint". Only when the same substances are fused and burned can basically the same magazine be obtained.

Without this impurity, it means that the prisoner did not use these things to make nitroglycerin.

"That is to say, it wasn't nitroglycerin that started the fire?" Takagi asked a little disappointed after getting the results of this large-scale experiment.

"No, the general direction is correct."

Tang Ze shook his head and said, "But we don't know the specific manufacturing materials. This is a good thing and a bad thing."

The good thing is that the prisoner used special materials to make nitroglycerin, and if he could find it, he could directly lock the prisoner.

But the bad news is that this is like looking for a needle in a haystack, if you can't find the special material, you can't start.

Sure enough, even though Tang Ze brought Hiroshi Saito to think about it together, he still didn't think of the special material used by the prisoner to synthesize nitroglycerin.

And this kind of thing should be very common.

For example, chemistry teachers, although it is indeed easy to come into contact with acids that can synthesize nitroglycerin, but these things are strictly managed by the school.

If you don't want to be discovered, you can only use things that are easier to get your hands on.

Tang Ze returned home full of doubts.

"You're back, my aunt sent crabs from Hokkaido today, let's have this for dinner."

As soon as he entered the door, Tang Ze saw that Ayako was setting off and was busy working. He also put down his work and walked into the kitchen with a smile: "Crabs are really good. I haven't eaten for a long time."

"According to my aunt, they are all freshly caught and refrigerated, and then sent over urgently." Ayako laughed.

"But why did I find out about this kind of thing last." Tang Ze glanced at the king crab in the foam cooler, and said a little speechlessly.

"It proves that I am the person in charge at home." Ayako said proudly, "You no longer have the right to speak!"

"It's easy to say anything else, but the right to speak in the bedroom must be mine."

Tang Ze stretched out his hand to hug Ayako with a smirk, but was slapped away by the other party and rolled his eyes: "I know what I think about every day, and I haven't eaten yet."

"Alright, let's eat and eat." Tang Ze smiled and said, "I'll go change my clothes and come over to help later."

"Then I'll make the miso soup, and I'll leave the handling of the crabs to you." Ayako pointed to the side: "The knives are already ready over there."

"OK."

Tang Ze went to the bedroom to change his clothes into pajamas, and then began to dismember the crab.

Tang Ze's mother sent king crabs, which are the most plump crabs from November to March every year.

Although it is a bit late in time now, it is still in time for the season.

Tang Ze first removed the claws of the crabs one by one, and then he cut them one by one with scissors. Although it was troublesome to handle, seeing the crab meat full of crab legs gave Tang Ze a little more motivation.

On the other hand, Ayako wrapped the crab meat processed by Tang Ze in the coat and processed it.

The king crab and crab roe are not the best among the three major crabs in Hokkaido, but the plump meat of the crab legs is a must.

Tang Ze is looking forward to making it into tempura.

Of course, Tang Ze specially reserved three sections to split it open, roasted it slightly, and spread mayonnaise on it, intending to taste the taste of baked crab legs.

As for the crab roe in the middle, although it is not as good as the other two crabs, it cannot be wasted.

Tang Ze cleaned the stomach and gills first, and then began to inspect the crab roe.

It's a pity that because of the season, the crab roe is not so full, and it is almost one-third empty.

Grain rice

Tang Ze used the shell of his upper body as a small bowl and poured all the crab roe into it.

Because before Tang Ze came back, Ayako had already cleaned the crab shells, so there was no need to worry about hygiene.

So far, "one crab, three meals" has been settled, but when Tang Ze has dealt with these two things, Ayako's side has just started.

After all, Tang Ze's two dishes are roasted, and they can be eaten as soon as they are put on top.

But tempura is a kung fu job, and it is not so easy to fry tempura with just the right temperature.

Of course, Ayako's culinary skills can be said to be full, and the fried tempura is just right.

But the first thing the two ate was crab meat tempura. After all, it took too long for the two grilled ones, and they were ready to eat after being fried.

The delicious crab meat and batter are blooming in the mouth, and it can be said to go well with rice.

After that, there is crab meat baked with mayonnaise. Because it was his first experiment, he didn't dare to do more, just to taste the taste.

Take out the grill pan, the original crab meat has been covered in golden brown.

After biting into the crust that looked like grilled cheese, the aroma immediately erupted in the mouth, and the roasted thick mayonnaise blended with the crab meat instantly grabbed the stomachs of the two of them.

"This is delicious." Ayako's eyes lit up after taking a sip: "Where did you find the good way?"

"My friend told me." Tang Ze was perfunctory, but he couldn't say that he learned it from watching those broadcasts in his previous life.

The two worked together to mop up a few crab legs. Of course, most of them were eaten by Tang Ze. With his current physical fitness, his appetite is actually quite large.

"I'll get the crab roe, we'll eat crab roe bibimbap."

As Tang Ze said, he got up and went to the kitchen, but he didn't expect to see Ayako gesturing around with the flowers she brought back yesterday in her hand.

"You're eating, why are you up?"

Tang Ze looked at Lingzi who seemed to be choosing the location of the flowerpot to visit, and said in surprise: "Also, what are you doing with that potted flower?"

"Eh? Didn't your friend give you this?"

Hearing Tang Ze's words, Ayako held the flowers with a look of surprise on her face: "You took this back after drinking yesterday. I thought it was you going to a friend's house for dinner, and your friend gave it to you."

"Ah, I got excited and forgot to mention yesterday." Tang Ze patted his forehead and told Ayako what happened yesterday.

"It turned out that it was given to Criminal Sato. She gave it to you to reject Mr. Samejima."

Ayako looked at the flowers in her hand with some pity: "It's a pity that the flowers are so beautiful that they are not given to someone who owns them.

It can be seen that Mr. Samejima fertilizes and waters the flowers very carefully. "

"etc."

Tang Ze stopped what he was doing, and suddenly turned his head to look at Ayako: "What did you just say!?"

"Eh?" Ayako subconsciously repeated after seeing Tang Ze's words, "I said such a beautiful flower..."

"It's not this sentence." Tang Ze interrupted Ayako, "It's the next sentence."

"I said that Mr. Samejima is fertilizing and watering the flowers very carefully." Seeing Tang Ze's bewildered look, Ayako didn't show any strange expression, instead she cooperated and repeated her words again.

After all, for her, having a husband who is a criminal is like this. Occasionally, she would inadvertently remind the other party with a word.

If you guess correctly, the other party will be thanked by the other party for his meritorious deeds later.

And as soon as this thought fell, Ayako felt her whole body being hugged the next moment.

"Thank you so much, you are my lucky star." Tang Ze kissed Ayako on the cheek: "You have made a great contribution!"

"It's good if I can help you." Ayako smiled at Tang Ze's excited look: "As a thank you, you should quickly settle the case and take a vacation."

"Okay." Tang Ze just finished nodding his head, his nose moved slightly to look at the crab shell riding on the crab roe, and his expression changed: "Oops, the crab roe has been roasted."

Frantically saving the crab roe, Tang Ze tasted it and heaved a sigh of relief.

Fortunately, it was just slightly overcooked and had a slight bitter taste, so it was not scrapped at all.

After tripping over the rice and pairing it with some seaweed and sesame seeds, Tang Ze tasted it and heaved a sigh of relief.

Fortunately, it is a bit bitter but has a different flavor, which is not bad.

Feed Ayako two mouthfuls with a spoon for her to taste, and Tang Ze will clean up the rest.

After dinner, the two went out to watch an opera before returning home leisurely.

Although Tang Ze came up with a breakthrough clue through Ayako's inadvertent reminder, Tang Ze was not so restless that he didn't even care about his life and just plunged into work.

Moreover, this verification also requires a huge workload, and it will not be rushed for a while.

Early the next morning, Tang Ze didn't go to work early, but rested at home after eating, and didn't go out until eight o'clock.

And his destination is not the Metropolitan Police Department, but the largest fertilizer store in Tokyo.

That's right, Ayako's words yesterday reminded him of an important piece of information, or let him get out of the misunderstanding.

Glycerin can be easily obtained in enemas, and although simple "acids" are not so easy to obtain, some things have "acids" attached to them, which can also achieve the same effect.

The fertilizer for gardening is the most common substance that may contain the element "acid".

With a wave of his hand, Tang Ze bought all the fertilizers on the market and asked them to put them in the trunk of his bicycle.

Fortunately, although there are a lot of fertilizers, they are all in small bags, and a bag of Tang Ze can also be put in the trunk, otherwise, he would have to ask someone to drive a special truck to take it to Kesouyan.

However, when he came to the testing department with a large amount of fertilizer, it still attracted a lot of wailing~lightnovelpub.net~ After all, the previous workload was enough to destroy them. I didn’t expect to do it again this time. And it's more work.

After all, this time, he mixed fertilizer and enema, and then saw if it could match the magazine at the scene of the crime.

Just thinking about that huge combination made everyone's scalp tingle.

"Okay, I know the workload is heavy this time, so I will give you overtime pay."

Tang Ze hugged the potted flower and said with a smile: "Thanks for your hard work, now go to my car and bring up the fertilizer, and buy some food and drink by the way, I'll treat you."

Hearing Tang Ze's double encouragement, all the researchers looked better.

But thinking of the horrible workload, everyone still couldn't help but sigh.

After Tang Ze became the shopkeeper, he felt more and more that it was a wise choice for him to promote the establishment of "Kesouyan".