After listening to Zhai Shuo's description, Li Yifan was absolutely sure that the poison in those patients was huaxue suigu powder.

"It should be this kind of poison. Is there an antidote?" Li Yifan asked again.

Zhai Shuo shook his head. "My friend also saw it from ancient books. There are only some records on it, but it doesn't explain how to detoxify it."

Li Yifan suddenly showed a disappointed expression, but soon lit up hope, "good! Now we know what kind of poison is in it. The next step is to find an antidote for this kind of poison. Find the man who poisoned it. "

"Well!" Zhai Shuo patted him on the shoulder, "if you look for someone, you should know something when the military investigation results come out."

Li Yifan nodded, and then informed soli of the news of huaxue suigu powder.

"Great! We have found the kinds of poisons so quickly, which greatly speeds up our research progress! " Solie was pleasantly surprised.

"This is mainly due to Uncle Zhai," Li Yifan said with a smile.

"No matter whose credit it is, finding the type of poison so quickly means that those patients have hope of recovery. It's a great thing!" Soli couldn't help but feel happy. "By the way, did master Zhai say how to control this poison?"

"No, I haven't found an antidote yet. I don't even know how to control the toxicity of this poison," Li Yifan said helplessly.

Hearing this, Solie was a little disappointed. "It's OK. It's already very good. Tell master Zhai for me. Thank him so much this time! I have to report the news quickly. "

"Good!"

"In addition, I'll let you know as soon as the military has the investigation results."

Hang up the phone, Li Yifan went to the library, to inquire and Tangmen related information.

The Tang clan has been destroyed for hundreds of years. Most of the materials handed down are people's knowledge of the Tang clan, and most of them are general. After reading them all day, there is no harvest.

Until the afternoon of the third day, Li Yifan was seeing a doctor at Huichun hospital.

A brave and cool woman in black came to her. As soon as she entered the door, she went straight to Li Yifan and said, "Hello, are you Mr. Li Yifan?"

Li Yifan was stunned and raised his head. "I am. What can I do for you?"

The woman said with a smile, "I'm sent by Dean Suo. I need you to meet someone with me."

Li Yifan realized that the woman was mostly from the military. He nodded and stood up, "let's go."

Two people immediately out of the door, on a car, the car all the way gallop, came to a large courtyard near the isolation area.

"Here is the man?" Li Yifan was stunned.

"Well, this is a temporary stop for us. After all, there is no village in front of us and no shop behind us. We can't all crowd in the isolation area, and there are not so many places to live." Women speak fast.

In response, Li Yifan expressed his understanding. He asked, "I don't know who in the military wants to see me?"

"It's our national security team leader!" The woman answered casually, but did not speak again.

Soon, the car stopped in front of a small house in the yard.

The house is simple and crude. It looks like an ordinary house.

In different corners of the yard, there are some soldiers who are responsible for protecting the safety here.

"Come in with me, the people are in it!" The woman walked quickly into the house.

Li Yifan immediately followed. After entering the house, he saw a cold looking man about 35 years old.

The woman immediately called to the man, "chief, I've brought him!"

"Hard work!" The man nodded, turned his head and looked at Li Yifan, "Mr. Li, I've heard a lot about you!"

"You're welcome!"

"Let me introduce myself. I'm Ji ye, the leader of the national security team in southern Sichuan. I'm responsible for the intelligence network and security in this area, and I'm also responsible for some tasks assigned by the top!" Ji ye said with a smile: "I heard that Mr. Li has made great efforts to find out the cause of the disease and the types of poisons so quickly this time. On behalf of those patients, I would like to express my gratitude to you!"

Li Yifan waved his hand, "I'm just in my job, so I don't want to say anything polite. Let's quickly explain the situation. I think you should find out the results, right?"

For example, to investigate the affairs of the citizens, this kind of authority is only available to people like Ji Ye.

Ji Ye nodded, "after receiving the task this time, after several days of busyness, we finally have the investigation results! Mr. Li, please have a look at this information! "

He immediately took out a sealed paper bag with the information, handed to Li Yifan in front.

Li Yifan took it suspiciously, opened it and looked at it briefly. His face sank, "is it him?"

"Well?" Ji Ye Leng for a while, "how, Mr. Li knows this person?"

Li Yifan looked up at him, "you tell me the general situation first, I can judge."

Ji Ye hesitated, nodded, and explained in a deep voice: "We conducted a large-scale and detailed survey on the range of daily activities of those patients before the onset of the disease and the people they contacted, and finally determined that they had been to several places before they were treated with huaxue suigu powder."This is one side of the woman took out a few maps, "I have personally investigated these places, the first one is Milu Street Garden in Shinan District of central Sichuan. The second is the summer flower park in the south. The third is Tianya Street Garden in the west district. These three places all have a common feature, that is, they belong to a small park, with more people resting at ordinary times and more people on weekends. And three places on the map form a triangle. According to our previous investigation experience, taking these three locations as the center, with a diameter of three to five kilometers, should be the scope of activities of the poisoners. "

"In other words, these three places form a cross, right?"

"Yes! From the area of Chuanzhong City, there is an intersection of three places with a radius of five kilometers. The center is in a place called Tianxing building, where a hotel is just opened. It can be concluded that the poisoners stayed in this hotel several times before poisoning, then spread from the hotel five kilometers from east to west, north to south, and chose to poison in the crowded places of these three parks. " The woman's tone was firm.

Looking at the Tianxing building marked on the map, Li Yifan thought, "have you ever investigated more than 20 poisoned people?"

"Of course, I did!" Ji night immediately nods and says to the woman: "Shen Ling, come on."

"Good!" Shen Ling immediately took out a thick information report, and while reading it, he replied: "according to our national security group's investigation on the patients' age, height, work, family, social circle, financial status and other information, we found that these people have several common characteristics..."