There were many tourists feeding the fish around the koi pond, most of them were children, throwing handfuls of fish food out, attracting countless brightly colored koi to grab the food.

Among this group of people, there were two people who were particularly inharmonious.

Two middle-aged uncles, one strong and one short, were smoking around the trash can.

Needless to say, the short one was Qian Tong, one of the robbers, and the man next to him was big and strong, with a faint silver metallic luster on his waist. I think he was the police guarding him.

Jian Jing was shocked when she saw them at first sight - aren't you afraid that the prisoner will run away?

Then she saw a bulge at Qian Tong's ankle, and then she remembered that the parallel world used electronic handcuffs technology with an embedded electric shock device. If the prisoner wanted to escape, he would be put on a weak current package in a minute.

"Okay, time to go." The middle-aged policeman put out the cigarette butt and said coldly.

"Hey, hey." Qian Tong nodded and pinched out the cigarette butt. "Um, do you have any paper?"

The middle-aged policeman handed him a napkin.

Qian Tong took it, covered his mouth and coughed a few times, folded the paper in half, wrapped the cigarette butt, and threw it on the top plate of the trash can. The middle-aged policeman didn't care and took his arm and left.

Jian Jing completed the stamping at the Jinli Pond check-in point while taking in the scene just now.

She frowned slightly, but had no idea. Although it is rare to see people pinching out cigarette butts and wrapping them with tissues, it is not good to say that it is a personal habit.

"Do you want me to give you some hints?" Cheng Jiayou saw her frowning and asked, "This is the most difficult one, it may be a little hard to guess."

Jian Jing then noticed that she was holding a piece of paper with the question written on it.

A string of meaningless English: Brizmgrmt.

The numbers need to be converted into letters, there are many types, but there are not many encryption methods with pure letters. She quickly analyzed it in her mind. There are 9 letters, which does not look like the commonly used fence method, and it is not smooth in reverse.

The most important thing is that there is no key, and there is no need to bother to match the codebook.

The key to decryption must be a common set of letter combinations.

Look at the alphabet in reverse.

Brizmgrmt→Yiranting.

Yiranting.

The answer has been found, but Jian Jing hesitated for a moment before she knew whether to say it or not: Zuo Xin said she would give him a chance, maybe the boy had waited all the way for the opportunity to help her "cheat", and it would be more appropriate for her to pretend to be stupid and wait for him to help.

However, this thought only went around in her mind for a while before she withdrew.

It is a respect for the person who set the question to decipher it seriously.

It is too fake that you can't even do such a simple question.

"This question is quite difficult, but I have seen a similar one before, it was Yiran Pavilion." She smiled.

Cheng Jiayou was stunned for a moment, then smiled bitterly: "Yes, you are really amazing."

Jian Jing comforted him: "I have studied some encryption methods in order to write novels. There is nothing wrong with your question. If it is too complicated and no one can solve it, it is not appropriate."

The ultimate goal of the event is to let the participants have fun. If the questions are too difficult, it is just a show of skill, not a game. She said sincerely, "The questions are all very good. You must have put a lot of effort into it."

"I feel relieved when you say that." Cheng Jiayou relaxed his brows, "Let's go, to the next stop."

The two were about to set off when they saw Zuo Xin and others coming towards them.

"Jian Jing, why are you walking so fast?" Zuo Xin was surprised, "I didn't run into you, so I thought you weren't there yet."

Cheng Jiayou explained, "There are several roads. The map of the park is not drawn in a standard way. Some roads look short, but they are more winding to walk."

"Oh oh oh~~" the girl laughed meaningfully, "No wonder someone helped you."

Jian Jing paused slightly and didn't respond. She only said, "I told you to wait for me, but you didn't."

Zuo Xin waved her hand, "I don't want to be annoying."

They were a group of students, noisy and lively. A cleaner wearing an orange vest came over slowly with a broom, swept the plastic bags and paper towels near the Jinli Pond into a dustpan, and dumped them into the trash can.

Then, he began to pick up the cigarette butts on the top, discarding the butts and picking up the ones with a bit of cigarettes left.

For example, those that Qian Tong had smoked.

A flash of inspiration came to him.

Jian Jing turned around and rushed over, blurting out: "Please wait a moment."

The cleaner looked up, revealing an old, dark face with wrinkles clearly visible: "Classmate?"

Jian Jing was not surprised, and smiled: "Old man, these are all smoked by others, they are dirty." As she spoke, she took out two candies from her pocket, "Eat these."

The cleaner was stunned for a moment, and it took him a while to understand what she meant. He took it and thanked her, and continued to pick up the garbage.

Jian Jing turned and walked away, keeping an eye on the other person.

He poured the garbage such as cigarette butts into the dustpan, and went to other places to continue cleaning.

This scene was very common, but she couldn't wait to watch it.

Just now, the system issued another task.

[System: New mission has been released]

[Mission name: Find the gold robber]

[Mission description: Three years ago, a group of people robbed a bank vault. They are still greedy and still dream of taking the gold away. Please help the police to capture the criminals and find the gold.]

[Mission reward: 20 courage points for success, no punishment for failure]

After several missions, Jian Jing has figured out some of the rules of the system.

The system is indeed an intelligent system. When drawing cards, it will adjust the probability according to the environment and requirements. So she only draws when she needs it in the later stage, which makes it easier to get the cards she wants.

At the same time, because the system has no autonomous consciousness, the program is too rigid. For example, the skill card given to Shufa at her book signing event is both intelligent and retarded.

But one thing is certain, the mission will only be triggered when she is connected to the mission.

Before, she agreed to help Ji Feng, but there was no mission. Now that she talked to the old man, the mission came. There is a problem no matter how you look at it.

Jian Jing asked Ji Feng: [There are only two people in the team?]

Ji Feng: [What?]

Jian Jing flipped through the records above and questioned: [One is responsible for the security system, and the other is for unlocking. Is there no one to respond? I don’t believe it.]

Ji Feng: [Those caught can be reported appropriately, but the specific case details cannot be disclosed to unrelated personnel. However, if you guess it yourself, it has nothing to do with me]

Jian Jing: [A plant]

Ji Feng: [What did you find?]

Jian Jing: [Smile.JPG]

She unilaterally cut off communication, thought for a moment, and asked: "Is there a toilet here?"

"There is one in front." Cheng Jiayou pointed to a bungalow farther away.

"Excuse me, I need to go to the toilet." She ran away decisively.

But the cleaner just now had disappeared.

Jian Jing didn't dare to look for him in a high-profile manner for fear of alarming them, so she had to call Ji Feng: "Have you checked all the cleaners?"

Ji Feng said: "Of course, I'm sure Li Li is not there."

"Here's the thing, I just discovered something." She told him about Qian Tong's little trick and the cleaner's abnormality, "That person's employee number is 1043."

Ji Feng: "Wait, I'll call you back in three minutes."

2 minutes and 45 seconds later, a call came back.

"You have a very good eye. That man is called Zhou Bing. He committed a crime when he was young. He was released from prison five years ago and works as a sanitation worker. Three years ago, he quit his original job and started working as a cleaner in the park." Ji Feng spoke faster and more excitedly. "Here comes the interesting part. The street where he worked as a sanitation worker is where the bank is. Although Li Li and his team were caught, there was a blank section of the road."

Jian Jing asked, "The way out of the bank?"

"Yes, we found them two streets away." Ji Feng said, "You may have guessed right. Zhou Bing may be the hidden third person."

"Cigarette butts are their way of communicating?"

"Not sure. Qian Tong has been relatively honest. If we accuse him without evidence, it is very likely that he will be disgusted and refuse to cooperate." Ji Feng pondered, "We will continue to observe them."

Jian Jing immediately made a request: "I want the cleaner's work area. Also, will Li Li be at Zhou Bing's house?"

"We have sent someone to check, but I think it will be in vain." Ji Feng analyzed, "Think about it, what has Zhou Bing been squatting in the park for three years? Is he meeting his accomplices? Will Li Li trust him?"

"This also proves that he doesn't know the location of the gold." Jian Jing was puzzled, "So, Li Li is the only one who knows where the gold is?"

"Not necessarily." Ji Feng said, "We need to know what message Qian Tong has sent out first."

When he said this, Jian Jing suddenly remembered something and hurriedly said, "By the way, I just walked from the camping site to Jinli Pond and saw a trash can with a cigarette butt wrapped in a tissue. I wonder if it was made by Qian Tong. You can check it out."

Even Ji Feng didn't expect her to pay attention to such a small cigarette butt. He was stunned for a while and said sincerely, "Take the police exam after graduation. It's a pity to waste your talent."

Jian Jing: "..." In fact, it was the credit of the intermediate observation card.

"It was wrapped strangely, so I took a closer look. It's a coincidence." She lied calmly.

Ji Feng didn't care what her reason was. He said he would find someone to check it out and hung up the phone.

A moment later, Jian Jing received the work schedule of the cleaners. The work scope of 1043 was from Jinli Pond to Yiran Pavilion.

Such a coincidence, she certainly would not miss the opportunity, and immediately set off for Yiran Pavilion.

Yiran Pavilion is located in the middle of the rockery and water intake. It is a relatively high place in the park and can overlook most of the park.

Jian Jing had a mission to accomplish, and really didn't want to waste time chatting with Cheng Jiayou, so she directly pulled Zuo Xin and a few girls along.

With a lot more people, both sides finally didn't have to rack their brains to think of topics. Jian Jing secretly breathed a sigh of relief, and although she chatted with everyone casually, most of her thoughts were on the case. Arriving at

Yiran Pavilion, she took advantage of the terrain to introduce the map of the park into her mind : Outer

Mountain

... Of course, before that, they have to find the gold. Where is the gold? Ding Dong, a new message popped up on WeChat. Ji Feng: [Picture.JPG] He sent a photo of a cigarette butt, wrapped in the same tissue as before, with only a few puffs. There is a tooth mark on the filter, and there are 5 fingernail marks on the white paper wrapped around the tobacco. There are 2 cuts on the edge of the tissue, and the two torn paper strips are twisted into ropes. What does this mean?