Plants are one of the main forms of life, including trees, shrubs, vines, grasses, ferns, green algae, lichens and other familiar organisms. It is estimated that about 350,000 species of plants such as seed plants, bryophytes, ferns and gymnosperms exist.

But plants that have always been at the bottom of the food chain can also kill invisibly, you know?

March 12, 2009, Sanya, China.

Sun, sand, coconut grove shadows.

Seagulls, crowds, choppy waves.

This is where Pan Lei is now on vacation. He wears a beach coat, beach pants and beach shoes, and sunglasses on a recliner. Bask in the sun, finish the front, and then bask the back, leisurely.

An ordinary young man with an ordinary appearance and wearing ordinary clothes came to his side and said in ordinary Mandarin: "Uncle Pan, it's time to go, the plant expert Smith National Tour Lecture Sanya College Station should start soon, it's rare." ”

"Zhang Wei? You're still ...... as always."

"That's right, it's me with an ordinary name. At present, the humidity of the seaside is 69%, and the ultraviolet index is 11, which has a lot of damage to human skin, and long-term exposure will not only lead to melanin deposition, but also easily cause skin cancer. Zhang Wei said expressionlessly.

Pan Lei had no choice but to stand up and stretch his waist: "What the eldest lady said is right, you are an ordinary young man who has no control." ”

"No appearance, no expression, no background, plus a data control, right? Now, if we don't hurry up, I'll be an ordinary young man with no appearance and no background, plus data control. ”

Pan Lei gave a thumbs up and said, "It's really an accurate summary." I really don't know why a world-class professor with a great reputation would come to the little-known Sanya University to teach...... Your eyes seem to be about to breathe fire, rest assured, inside information, Professor Smith has just finished visiting a wealthy local businessman, and is still on his way to the academy. So, let's go now, it's completely urgent! ”

……

October 1, 2009, 13 o'clock, Beijing Municipal Public Security Bureau.

In front of Pan Lei and Zhang Wei, there were two full tables of criminal files collected from all over the country, as well as various peach-colored news tabloids from urgent couriers from all over the country.

Director of the Public Security Bureau, Xiao Yong said apologetically: "Expert Pan, I really have to work hard for you again......

Before Pan Lei looked at the file, he rubbed his temples and said, "I just wanted to come back to rest, but I was arrested by you, what is the specific situation?" Can anyone tell me a little bit about it? ”

Xiao Yong said to a middle-aged man with a beard in the room, "Captain Tang Yutang, please briefly explain the situation first." ”

"Yes! Xiao Bureau! Expert Pan, here's the thing, in just the past three days, a total of 39 deaths have occurred across the country. The deceased have the following things in common: first, the time of death is similar, and second, they are all small wealthy businessmen under the age of 40 with assets of 10 million to 50 million. Third, they all live alone, and their private lives are comparatively chaotic. Fourth, the cause of their death was toxic shock caused by fungal septic. The biggest difference is that they are scattered in major cities across the country. At present, the investigation has ruled out the possibility of the cult organizing a ritual or agreeing to commit suicide at the same time. ”

"In a short period of time, so much work has been done, which is already amazing." Pan Lei sincerely admired, "Have you ever done a map analysis of the chronological order and distribution of deaths?" ”

"I've done it, it's disorganized." Xiao Yong said.

"Mind letting me borrow the chronology and distribution map of the deaths you made?" Zhang Wei asked.

"It's okay - Xiao Zhou, bring me the map I made last night."

"No, no," Zhang Wei suddenly shook his head and said, "There should be one less person, and 40 people have a complete feeling." ”

"You are obsessive-......compulsive disorder," Pan Lei, as if he suddenly remembered something, said again, "But this possibility cannot be ruled out, so I can only work hard to contact the public security departments across the country to check whether the hospital system has received patients with fungal infections, and then screen out people who meet the conditions you said from these people." ”

"Okay, but I don't think there's much hope." Xiao Yong said.

"I think so, too, but the investigation is still done. If there is a breakthrough, it will save a lot of time, reduce the panic of the people, and control the situation as soon as possible," Pan Lei thought for a while, and said, "What reason do you use?" ”

Xiao Yong said with some embarrassment: "These people are evenly distributed across the country, and there are not many, so I temporarily use the reason for the death of STDs caused by the chaos of private life." ”

“…… Well, that's fine for that reason. Pan Lei nodded and said.

Xiao Zhou sent the map over, and Xiao Yong went to assign the task. In addition to other office policemen in the room, only Pan Lei and Zhang Wei remained.

"Zhang Wei, let's divide the labor. Peach News, Criminal Files, Which Do You Want to See? Pan Lei asked.

"No, I'll look at this!" Zhang Wei pointed to the map that had just been sent with a circled number.

“…… All right! Let's start our own way, and if we find anything else, write it on the whiteboard over there. ”

"Good!" After Zhang Wei finished speaking, he asked the police to help hang the large map on the wall, and then began to observe motionlessly......

One minute...... Ten minutes...... One hour ...... Two-hour ......

If Zhang Wei's eyes weren't blinking, Pan Lei would have thought that he had practiced a new skill - sleeping standing up.

"I'm halfway through on my side...... Nothing, what about you? Pan Lei took a sip of water, rubbed his temples and said.

"Me? I found out an hour ago. Zhang Wei still said expressionlessly.

“…… So what are you doing for more than an hour? Pan Lei said helplessly.

"Specifically, the next hour, twenty-four minutes and thirty-five seconds, thirty-six seconds ......," Zhang Wei continued to say expressionlessly.

"Stop!"

"I used 12 methods to test my conjecture. The first method is the method of elimination. The second is the hypothetical method......"

"Stop! Zhang Wei, please tell us about your findings! Pan Lei stood up and quickly interrupted loudly.

Other police officers heard the movement and also surrounded it. But I still don't understand when I look left and right.

"You can't see anything on a map like this now." Zhang Wei shook his head.

"What do you think of that?" A policeman asked very cooperatively.

"Marker, bring it." Zhang Weidao.

Someone immediately sent a pen. Then Zhang Wei was next to the serial number on the map of the order of death, and began to write the numbers quickly.

Someone also quickly recited: "1. Guangzhou 31, 2. Fuzhou 29, 3. Shenzhen 28, 4. Ningbo 29, 5. Chongqing 32, 6. 30, 7. Shijiazhuang 27...... 17. Changsha 23, 18 Tangshan 24, 19 Xi'an 22, 20 Taiyuan 21...... 36. Shanghai 14, 37 Kunming 15, 38 Beijing 13, 39 Nanning 14. ”

When he finished speaking, he quickly gasped and went to find water to drink.

"At first glance, it seems to be a ...... pattern," said a policewoman.

"It's, the weather. Yesterday we were in Shanghai, and it was only 14°C under the influence of cold air. Pan Lei also said in surprise.

"Could it be? These are all the temperatures at the corresponding time in the corresponding cities across the country in the past three days? Someone was surprised.

"It's all about brain memory?" The policewoman covered her mouth in surprise and said.

In the end, a policeman who had not spoken said: "I randomly checked the temperature of ten cities, and all of them are right!" ”

Zhang Wei shook his head and said, "It's a pity that this chronological table of death is not accurate to what time it is, otherwise the temperature will be more accurate." ”

The expressions of the police officers were wonderful again.

"Is your name Zhang Wei? That's amazing, which police academy did you graduate from? The policewoman asked.

"I am a ...... graduated from Beijing Institute of Technology"

"Do you have a partner?" She asked again.

"No, what's wrong?"

"That's it! Do you have time to eat together in the afternoon? The female policeman said a little shyly.

"Huh? I don't have time, I want to investigate the case as soon as possible. Zhang Wei said expressionlessly.

"Okay......" The female policeman was suddenly a little lost.

It's a pity that someone didn't notice it at all, but asked: "Let's not talk about the deceased, just talk about this decreasing time, what rules do you follow?" ”

The others couldn't help but fall into deep thought again.