Ared actually mentioned Zhao Zihe, which surprised Zhang Yihu. This situation is very important.

In an instant, Zhang Yihu had the intention to report this situation immediately.

But he forced himself to suppress the impulse in his heart and continued to chat with Eled, but Eled no longer mentioned the situation of "Zhao Zihe" in Germany.

Zhang Yihu understood that the rigorous Germans are not fools, they can also be very cunning.

Maybe this is the "Eastern wisdom" he learned in China.

"This damn Germanic man is so speculative about talking to the Chinese with the yellow monkey?"

"Major, I heard that the Germans have been very close to the Chinese recently, and they have signed many cooperation agreements!" A French lieutenant behind Major Pierre, "There are both military and economic, and the Germans have made a lot of money!"

"Damn it, the Germans snatched away the limelight!"

"But Germany is not calm, the newly-employed Adolf is an extreme nationalist, and there are signs that Germany will attack the Jews in the near future..."

"Jews, that nation that has been destroyed?"

"Yes, they are one of the smartest ethnic groups in the world!"

"Just, is a race whose country has been destroyed qualified to be the smartest group?"

“…”

"The Japanese military officer representatives have not arrived yet. They are now hostile to the Chinese. Let's wait and see the show!"

"I heard that Japan also photographed a major general this time, the deputy chief of staff of the Kanto Army. I don't know what kind of sparks will be created after he faced with that major general Zhang?"

"I'm looking forward to it too!"

"What about Americans. They always don't care much about this, they are late every time, really..."

Qiu An led a team to gallop all the way into Xuanhua City.

"Ming Gong, Major Qiu from Dong Kang has arrived!"

"Come in!" Song Mingxuan had just had lunch and had a short rest. After hearing the adjutant's report, he immediately ordered.

"Major Qiu. Please here!"

"Hello, Song zx!"

"Major Qiu, you are here, sit down!" Song Mingxuan greeted, "You Commander-in-Chief Lu has called me. He asked me to give you all conveniences and fully support you in solving this murder case in the shortest time, and you will be innocent!"

"Thank you, Song Zx." Qiu An said gratefully.

"You don't have to be so polite. I am a fellow townsman with you Commander-in-Chief Lu. I am older. I am his elder brother, not to mention that we are all Chinese. This case happened under my rule and is related to soldiers. If the murderer is not captured, my face will be dull, and your reputation will be greatly affected!" Song Mingxuan said.

"Thank you, Song zx for your understanding, Qiu Anming feels like you!"

"I won't say much nonsense. Our two families work together to thoroughly investigate the case, give the victims justice and prove our innocence!" Song Mingxuan said.

"Please don't worry, Song zx, we will definitely find out!"

"The case is progressing quite well now, but some clues have not yet been broken through. You come here to help us break through!" Song Mingxuan said.

"Song zx, don't worry, we will cooperate with the investigation!" Qiu An nodded. He was at home, and he came to assist in the investigation. It would be bad that he would win the main point. Moreover, if the case was solved, it was also someone who received the award!

How could Qiu An not see Song Mingxuan’s thoughts?

However, if this is not the result, Qiu An didn't care. He cared about how to prove his own innocence and the murderer who caught the murderer.

As long as the real murderer is caught, the crisis will naturally be resolved.

"You can change into the police uniform first, it's better to avoid attracting too many people's attention!" Song Mingxuan said.

"Song zx is more thoughtful!" Qiu An nodded. At this time, they would inevitably attract the attention of the outside world in their outfits. It would be better to act low-key and not easily cause trouble.

The police uniforms were already prepared, and Qiu An and others temporarily stored the replaced equipment in the gun room of the 29th Army headquarters. They lightly counted and sealed it.

"This Dong Kang is rich. Look, this 38 rifle is 80% new. A soldier carries sixty rounds with him, and there are also these military shoes and uniforms. No wonder they can fight against Japan..."

"Old Shen, stop nagging. Look at these things. One missing piece of them is not enough. We can't afford to take advantage of them. Our 29th Army is poor, but we are poor and have backbone..."

"Okay, even if it comes to me, there will be no shortage of buttons!" Old Shen, who looked at the warehouse, waved his hand unhappily!

After changing into the police's clothes and equipment, Qiu An and others entered the police station under the leadership of the police station!

"Director, this is Major Qiu. His current identity is a policeman, and he is involved in joint case handling. This is Song zx's intention!" With Song Mingxuan's order, the police chief dared not cooperate. He wished someone could share the responsibility on his shoulders!

"Director, I'm sorry, I've caused you trouble!" Qiu An said politely.

"Where, where, Major Qiu can come to help, that is our honor!" the director greeted enthusiastically, "We want to!"

"Director, time is tight now, and I won't talk nonsense to you anymore. I want to know the latest progress in the case!" Qiu An said bluntly.

"Okay, okay, Major Qiu is quick and speaks, come with me!" The director also knew that this case was important. Qiu An came with the order that Song Mingxuan cooperated with all his strength. How dare he shirk responsibility on this?

"This is Inspector Lin, this is Forensic Doctor Guo. The two of them are now taking the lead in handling this case. You can get to know each other..."

"This is Major Qiu from Dong Kang. He is temporarily cooperating with us in handling the case as a policeman!"

The director introduced and met Qiu An.

"You two, you are both professionals. How troublesome are you to handle the case!" Qiu An said.

"Major Qiu, you are polite. This is our duty!" Both of them didn't care about Qiu An's intervention. In fact, this case is very difficult. Even if Dong Kang doesn't intervene, he will still find it in the end.

"Tell me the case!"

"Major Qiu..."

"Call me Captain Qiu, so that no one will notice it!" Qiu An said.

"Captain Qiu, now it is basically certain that Mr. James was murdered and died of gas poisoning, that is, carbon monoxide poisoning. Our biggest discovery now is that the footprints from the windowsill of James's bedroom outside the corridor and found the same footprints in several other places. After careful comparison, we found that it was left by the same pair of shoes by the same person. At Renji Foreign Company, we did not find any pair of shoes with the same shoe prints, but after careful observation, we found that the patterns of these shoe prints were very similar to the military shoe prints worn by the soldiers of Captain Qiu. We went to the place where Captain Qiu was staying yesterday and quietly took the shoe prints for comparison. We found that the patterns of the shoe prints matched, Captain Qiu. Look, this is the shoe print patterns we collected on the spot. There are also the shoe print patterns left by you, and there are also the shoe print reversal..."

"Have you ever found the same shoe prints where we have been?" Qiu Andao, "As far as I know, everyone's shoe prints are different, especially old shoes. According to each person's center of gravity, walking habits, and the wear level of the soles, even if new shoes are worn on different people, the shoe prints that come out have subtle differences!"

"Captain Qiu is also proficient in trace learning!" Inspector Lin was shocked. Qiu An's words did not seem to be said by a soldier, but rather he was a case-solving expert who was proficient in trace learning!

"That's all I said!" Qiu An smiled embarrassedly. Is Shinji very amazing? The compulsory subject of the Wolf Teeth Special War Brigade!

"Yes, after our careful comparison, we did not find any shoe prints that were exactly the same as those we found at Renji Foreign Company!" said Inspector Lin.

"So we will follow up with another clue!"

"The source of James' poisoned gas?" Qiu Andao.

"Yes, Captain Qiu, how did you know?"

"Since you can't find a breakthrough from us, you naturally have to look for a breakthrough in another direction. The poison gas is the most obvious!" Qiu An explained.

"At first we inferred that it was burning charcoal, but if it was burning charcoal, there would be certain traces left on the site, such as smoke, or dust particles, etc. However, after our careful investigation, the site was very clean and there was nothing we wanted!"

"Carbon monoxide is a flammable and explosive gas. Under normal circumstances, no one will deliberately manufacture and store it. And if it is not done properly, it will hurt itself!" Qiu Andao.

"Yes, but it is very difficult for ordinary people to make carbon monoxide gas, and it is very easy for people who know chemistry, although it is also very dangerous!" Inspector Lin said.

Forensic Doctor Guo said: "So we judge that this is a person who is proficient in chemistry and commits the crime!"

"Sodium oxalate!" Qiu An said slowly.

"Captain Qiu even knows this?"

"It's not difficult to speculate, where is our Xuanhua?" Qiu An asked at the two of them, "In the leather capital, sodium oxalate is needed during the treatment of leather. After sodium oxalate is heated, carbon monoxide will be produced. However, carbon monoxide is easy to burn, and the danger is also very high in the process. After carbon monoxide reaches a certain concentration, it can only die. Therefore, carbon monoxide should be manufactured first, compressed and stored, and then placed in James' bedroom!"

"Although carbon monoxide is colorless and odorless, it will cause slight discomfort after inhalation, which is generally not easy to detect?"

"No, the south wind blew last night. The murderer must have thought that after James died, he secretly opened the door and the window on the north and dispersed all the gas inside!"

"Then no one smelled this little gas?" Juan asked strangely. Is James' bedroom far away from where others live?

"Who is the closest person to James's residence?"

"It's his maid Bell!" Inspector Lin replied.

"Have you ever asked her if she smelled anything when she opened the door, and she felt drowsy?" Qiu An said.

"No, we had not confirmed the cause of James' death at that time, nor did we think of this!" Inspector Lin shook his head and said.

"Take this Bell back and ask again?"

"This, we have released people and brought them back?"

"If you don't bring it back, can't you come to ask?"

"Yes, yes, I'm confused, this is OK!" Inspector Lin slapped his forehead, and he almost forgot that he could come to ask about the case.

"When storing carbon monoxide gas, you must consider safety. All the first choice is cylinders or pressure bottles, but these containers are relatively bulky and difficult to carry and carry. If it is only stored for a short time, simple containers can be used, such as airbags or rafts. As long as they are sealed, they can be completely fine!" Qiu An continued analysis.

"Detective death by carbon monoxide poisoning does not necessarily have to reach a concentration. Of course, the greater the concentration, the greater the possibility of death. Judging from the autopsy results, James' death time is very short. Based on this, the concentration of the carbon monoxide gas released by the murderer is very high in James, which makes him fall into a coma in a very short time and then die quickly!"

"The murderer quickly drained the poison gas from the north and south doors and windows afterwards. This may be the reason why we didn't feel any surprise at the scene!"

"But if it is poisoning, James should react, and from the scene, there is no trace of struggle or being moved?"

"Usually, what would Inspector Lin think of this?"

"Acquaintance commits the crime!" Inspector Lin shook himself hard, "Old Lin is confused, and all such important clues have been ignored!"

"Yes, this is very likely to be a crime committed by an acquaintance. James was not prepared and was easily poisoned to death!" Qiu Andao.

"But this man released poison gas, wouldn't he even wear a gas mask?"

"No, let's get James faint first, and then can you do whatever you want soon?" Qiu Andao.

"But we did not check any other scars on James' body that caused him to unconscious!" Forensic Doctor Guo asked strangely.

"I have never seen James' body, but if the other party is a chemistry-savvy person, it is very simple. It only takes a little bit of ether to make people faint. Moreover, ether is volatile, and it may not be detected after several hours of ventilation!" Qiu Andau.

"Yes, yes, I'll go back to the anatomy room right away..." Forensic Doctor Guo shouted and rushed out directly.

"Captain Qiu, forensic doctor Guo is this?" The director next to him was filled with mist. Seeing the situation of Forensic doctor Guo, he felt incredible.

"Director, ether is an anesthetic agent. You only need to use a towel to dip it in a person's mouth and nose for a few seconds, which can make a person completely unconscious and then do whatever he wants!" Qiu An explained with a smile.

When an acquaintance commits the crime, he leaves shoe prints to frame them at that time. Who will it be?
Chapter completed!