The opening hours of the epiphany, which has a certain relationship with the local temperature. Generally, from July to August, it blooms at 9-10 o'clock at night, until it withers at 2-3 o'clock in the middle of the night, and the flowers bloom for 4-5 hours. If it blooms from late September to October, it mostly blooms around 8 p.m. and withers at 4-5 a.m., and the flowers bloom for 8-9 hours.

Before opening, the young buds of epiphyllum become drooping and curve upwards before blooming. The process of epiphany opening is also known as "the first wonder in the world!"

In a short period of time, the epiphyllum grows from small to large, and soon becomes a huge, white and flawless flower bone. From a distance, it looks like a pure and beautiful jade, and it looks like a slim girl, gently touched with her hand, soft as a piece of silk!

Then, the petals slowly open, like a jade tight-mouthed "cup", from the top, it seems to float a thin light veil inside, and the sesame-sized tender yellow stamens stretch out of the flower with the opening, which is unique.

At the same time, it slightly exudes a fresh and elegant fragrance. Therefore, many flower lovers do not hesitate to wait all night, in order to appreciate the short-lived spectacle, but also to smell the fragrance of flowers.

With that in mind...

It is not difficult for Zhou Yixun to speculate: "It's the weather in July and August! Zhang Qingfu should have seen the sagging buds of the epiphany, and with the sign of opening tonight, he called the deceased..."

As for... The suspect Zhang Qingfu excused himself by saying that even if the flowers withered across provinces, he still used the epiphany to bloom tonight to arouse the interest of the deceased. Let's not delve into this...

Before coming, the suspect should inject Du Yuan, or toxin, which emits hydrogen cyanide, into the buds of Epiphany...

At that time, it was 20:10, and it was delivered to the hands of the deceased, and at 20:30, even the maid left the villa...

Zhou Yixun guessed: "I think, at that time, the deceased must have brought the epiphany potted plant into the studio, until 21 o'clock to 22 o'clock, the flower buds lifted up and began to bloom slightly, so the deceased couldn't wait to smell the flowers, so he was poisoned and died!"

I see!

Cao Hongjun was shocked at the same time, but he couldn't help but be surprised: "I didn't expect that after revealing the truth, the method would be so simple!"

It's normal to feel this way...

Zhou Yixun smiled: "Just like Sherlock Holmes said, after all, the bizarre methods are only man-made, the more outrageous the case, when the truth is revealed, you will find that the methods are actually very ordinary!"

Zhou Yixun's expression was indifferent, I am afraid that only the unsolved cases in the rivers and lakes will make it difficult for him to investigate, because he has no knowledge of the ghost methods of the grandmaster!

.......

Wrong... Wrong!

Zhang Fei'er was still puzzled: "What if the deceased did not bring the epiphany to the studio, but put the epiphany in the living room or the garden at the door of the villa?

Won't fail... For the deceased, it will be a success!

Zhou Yixun is very sure: "Because the deceased loved gardening, then he must know that plants like epiphany, which are more suitable for breeding indoors, are different from ordinary plants, but have the same habits as cacti!"

It is...

"It doesn't compete with people for oxygen, but instead absorbs carbon dioxide and continuously releases oxygen, which is very beneficial to the human body. Not only that, epiphany can also release negative ions, increase the content of negative ions in the room, and make the indoor air fresh and pleasant. And as a gardening enthusiast, the deceased would never have missed the short-lived spectacle!"

It makes perfect sense...

However, in the end, these are just speculations...

Concubine Zhang's expression was straight: "The most important point... What about the evidence?"

At this point, the evidence is already coming out...

"As long as the characteristics of Qionghua are clear, it is not difficult to find evidence! The surveillance at the scene not only proves that they did not set foot in the villa, but also proves that after the epiphany was handed over to the deceased, no one else touched it! So..."

Zhou Yixun smiled: "Now, epiphany can purify the air, and naturally it will also absorb hydrogen cyanide, as long as the withered potted plants are brought back, the same toxic ingredients should be detected from the inside of the plant!"

Absolutely!

Zhang Fei'er's expression changed slightly: "At first, I only thought it was the withering of the plant, so I didn't pay attention to it, and only checked the outside of the potted plant! Now if it can be determined that the poisoning inside the plant is the same as that of the deceased, then it can prove that Zhang Zhihua is the suspect!"

It seems that the truth has been revealed...

"Awesome Childe!"

Cao Hongjun admired: "He deserves to be the number one young detective in Guizhou Province!"

Tang Duoqian exclaimed: "Such a bizarre case of poisoning in the secret room can be solved so easily!"

"If you were someone else, you probably wouldn't be able to break your head!" Hu Zhiwei sighed secretly!

Look at the time, it's only been more than two hours since the investigation was detected...

In such a short period of time, the truth has been revealed! Even a seasoned and good agent is very difficult to do!

......

Ahem... Two dry coughs!

Concubine Zhang looked at Zhang Zhihua arrogantly: "How is it? Is there anything else you want to defend?"

Gone!

Zhang Zhihua's expression was indifferent: "I did all this, and it was indeed me who poisoned the epiphany!"

Yay!

A group of students from the Reasoning Research Club cheered even regardless of the occasion!

Even a willful and arrogant person like Concubine Zhang couldn't help but secretly admire Zhou Yixun at this moment! Looking at Zuncheng, I'm afraid there will be no such observation and reasoning talent again!

Never mind...

Clapping her hands, Concubine Zhang said proudly: "Since the case has been successfully resolved, roast the suspect and bring it back, and after the others record the confession, release it on the spot!"

By the suspect, Zhang Zhihua let out a cold snort: "You didn't see... Am I already handcuffed?"

Hmm!?Zhang Fei'er's beautiful eyes changed slightly: "What? you..."

Agent Zhang...

This is the third time that the forensic staff spoke: "Actually, Dean Liu and the servants, we have already been released, and we have already solved this poisoning case, and the murderer Zhang Zhihua has also been arrested and detained!"

What? Concubine Zhang was taken aback!

Even Zhou Yixun couldn't help but change his expression: "Your movements are so fast?"

This is certainly not something we investigated...

The forensic officer's face was embarrassed: "Thanks to the blessing of a young man, I can successfully detect it!"

Who?

In front of Concubine Zhang, the examiners were a little embarrassed: "It's the boy from the Wang family's bathroom case last time!"

"Chen Yuhan?" Zhang Fei'er grabbed the collar of the inspector: "You mean, that bastard?"

Be... It's him! The clerk trembled slightly!

It was the first time he, Chen Yuhan, and Zhou Yixun had heard of it: "Are you saying that the Wang family's bathroom case published in the newspaper was solved with the assistance of a person named Chen Yuhan?

"It's him, and it's about the same as your reasoning, but..."

The clerk stopped talking, and sweat grew on his forehead! How should this be answered?

In fact...

The suspect Zhang Zhihua got up and looked directly: "If you two young detectives are scored, he should be able to score eight points, and you can only barely count 6 points as a pass!"

What? Zhou Yixun's expression suddenly changed...

"Nonsense?"

Gou Wentao scolded angrily: "What is a passing score of 6, and you can't speak at all?"

I'm telling the truth...

The suspect Zhang Zhihua said indifferently: "Because it only took ten minutes for that young man to break through the investigation and come up with evidence! And his reasoning is higher than yours!"

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