Police Detective

It was already evening when we returned to Shangjing, and Bai Song received Wang Liang's WeChat message as soon as he landed.

Knowing that Wang Liang's side had already started arresting people, Bai Song decided to go see Tian Gen first. He was a little confused now and was not suitable for working on the case, and Wang Liang really didn't need him.

After calling Xinqiao to report that he was safe, Bai Song and Sun Jie took the airport light rail to Dongzhimen. Then the two separated and he went to find Tian Gen.

Maybe in the eyes of Sun Jie and others, Bai Song was in good condition, but Bai Song himself understood that he was a little thrown out of rhythm. When Bai Song interrogated the smugglers and found nothing, he admitted that X was a smart man. At the same time, he felt somewhat lost, so he needed to change his mood.

Tian Gen has just entered the first grade of junior high school. Although he is very sensible and has the ability to take care of himself, a child of this age still needs to be closely watched by adults as he grows up. Problems may arise if he is left alone.

According to Bai Song's usual habit, he must have gone to the work unit to look at the case as soon as he came back. Because of recent events, he decided to change his habits. Instead of looking for his wife or looking at the case, he would go to Tian Gen first.

Tian Gen was alone at home and was playing with his mobile phone at the moment. He heard someone knocking on the door and hurried over. Hearing the white pine outside, he happily opened the door.

Tian Gen was very happy when he saw Bai Song coming. It wasn't that Bai Song came with something, but that he liked Bai Song very much and always had things to ask and say.

"How are you doing lately? Have you studied well?" Bai Song glanced at the mobile phone on the table. This mobile phone was a domestic smartphone that Xinqiao bought for Tian Gen. Tian Gen was not young anymore, so it was time to give him a mobile phone. .

"I want to play when I have a mobile phone, and I watch Douyin every day recently." Tian Gen was very honest: "But, I only watch it for a short time."

"Well, just be careful." Bai Song put down his things, picked up Tian Gen's mobile phone, and was scrolling through Douyin.

Douyin at this time is different from a few years ago. When you open it, many of them are landscape pictures. What Tian Gen is looking at is Bai Song's two or three videos, which are basically landscapes. These scenery around the world are inherently beautiful, and with the addition of filters, they look like a fairyland on earth. When Bai Song saw a desert scenery, it was even more spectacular than what he had been to personally.

"Study hard. When you go to college, you can work a summer job every summer and earn money to travel by yourself. I did this before in college," Bai Song said.

"Okay!" Tian Gen nodded.

Bai Song had never played Douyin before and didn't understand it. After thinking about it, he searched Zhang Wei and found it.

Zhang Wei already has more than 2 million fans. The video content is basically about second-hand cars, as well as some other fun videos, and the click-through rate is very high.

Tian Gen was not that tall, so he just looked at Bai Song and kept scrolling. He didn’t know what he was scrolling about, so he just giggled. Tian Gen saw that there was fruit in the bag Bai Song brought, so he went to wash two apples. Take it and hand it to Bai Song.

"This brother is my friend," Bai Song explained. He had nothing to do. He found a chair and sat down, then gnawed on an apple and watched Zhang Wei's video.

What Bai Song didn't know was that if he watched videos like this, the system would assume that this user likes watching second-hand car videos. When Tian Gen starts watching videos on Douyin in the future, he is probably a car dealer of various kinds.

After watching a few, Bai Song felt that it was not interesting. The software was very simple. He found that from Zhang Wei, he could also see who Zhang Wei followed and which videos Zhang Wei had liked. (Note, this information could not be hidden in 2017)

From the video liked by Zhang Wei, Bai Song actually saw Zheng Yanwu.

Zheng Yanwu also shot a lot of videos, all of which are beautiful places around the world. He also has 20,000 to 30,000 fans, and his shooting skills have improved a lot.

Bai Song didn't understand this, but he had received pictures from Lao Zheng before, and had also seen Lao Zheng's circle of friends. He felt that Lao Zheng had improved again now, and could take pictures of beautiful scenery that were originally rated at 80 points to 120 points. The feeling of transcending perfection adds a touch of artistic conception.

Thinking of this, Bai Song decided to download one himself. Watching valuable videos occasionally was considered entertainment.

Putting down his phone, Bai Song saw the math problems on Tian Gen's desk.

"Is this a math problem for you in the first grade of junior high school?" Bai Song found that he couldn't tell the answer at a glance.

a^2x^2-(3a^2-8a)x+2a^2-13a+15=0, a is a positive integer and the equation has integer roots, find a.

"This is our competition question. It's quite simple." Tian Gen glanced at Bai Song, feeling a little proud.

"I can see that when a=1, this equation can be established, so a=1, right?" Bai Songkou has a strong calculation ability and calculated a value of a in one go.

"Yes." Tian Gen nodded and looked at Bai Song with some admiration: "You can calculate so quickly. But there are three solutions to this a. 1, 3, and 5 are all acceptable. There are four ways to solve the problem."

"Then tell me." Bai Song was very willing to listen to this idea of ​​solving the problem.

Tian Gen was very happy to hear this. He started to explain in detail. The simplest way to solve this problem is to factor it, and finally got [ax-(2a-3)][ax-(a-5)]= 0. In addition to this method, there are three other methods. Tian Gen talked about them one by one.

"Did you come up with these four methods?" Bai Song asked.

"I just thought of factoring," Tian Gen said, "The rest were taught by our teacher."

"Then your teacher is pretty awesome, follow him and study hard." Bai Song ordered, but did not continue to praise Tian Gen. Being able to think of such a factorization for this question requires good logical thinking and mathematical abilities.

"Yeah!" Tian Gen looked a little excited. He hadn't chatted with Bai Song like this for a long time.

He likes and admires Bai Song the most, mainly because Bai Song has so much knowledge and can learn a lot every time.

Then, Bai Song chatted with Tian Gen for more than an hour, ranging from a few mathematical problems to astronomy, geography, and all things in the universe. In short, Tian Gen was very interested in these. Bai Song planned to give Tian the astronomical telescope after returning this time. Gen sent it over. He himself didn’t have anything he wanted to read recently.

I have to say that astronomical telescopes do have a limitation, that is, unless they are shooting nebulae, etc., what can be seen directly through ordinary astronomical telescopes is nothing more than the sun (requires Bard membrane), the moon, and the five planets of gold, wood, water, fire, and earth. Can't see clearly. And these seven visible celestial bodies do not change much throughout the day.

After coming out of Tian Gen, Bai Song felt that his condition was much better.

Mathematics is very reasonable and logical. A simple junior high school math problem gave Bai Song a lot of novel feelings. He could do exhaustive calculations, violent calculations, analyze and try, and he could see the optimal solution at a glance. . If Tian Gen didn't tell Bai Song the method, Bai Song could also solve it, but it would be troublesome for Bai Song to be anxious.

The same goes for him. Although there is an X who knows him very well and has been targeting him, it doesn't matter if he has a qualified opponent. After coming out of here, Bai Song made sure no one was following him and took a taxi directly to the city bureau.

Wang Liang and the others were all here at the moment, and Bai Song called in advance and wanted to bring them some food.

"How many people are there over there?" Bai Song asked.

"There are still more than a dozen here at the headquarters. It's hard to rest tonight," Wang Liang said, "Now some places have started to take action. We plan to go to Yuzhou for a business trip tomorrow. That's where the most people are."

"X is not among these people, right?" Bai Song was a little confused.

"It has nothing to do with X," Wang Liang said, "Why do you care so much about him?"

"I'll go over and tell you later." Bai Song looked around: "Do you have anything to eat over there? I'll bring you some more?"

"There is food here, you can bring it. You can bring a roast duck and I'll see if it's okay and add some vegetables." Wang Liang said with a smile.

"Roast duck", Bai Song looked at his watch: "I'm not sure I can buy it."

"You're kidding, there's food here. If you want to come, come quickly." Wang Liang said with a smile.

After hanging up the phone, the driver was very enthusiastic. He heard Bai Song talking about roast duck, "I'm telling you, young man, come here to eat roast duck. You don't have to go to some party. There are many good restaurants, one hundred yuan." It’s delicious to eat just one piece of money.”

"Master, can I still buy it at this time?" Bai Song asked.

"Yes, no problem, but we have to take a detour." The driver was very familiar with the area.

"Okay, take me there." Bai Song nodded: "Just don't go too far around."

The city bureau is actually not that far away. It is less than one kilometer away from the workplace of Bai Song and others, and about ten kilometers away from Tian Gen.

Wang Liang and the others can walk there. Not far south from the Criminal Investigation Bureau is the Supreme Court, and opposite the Supreme Court is the Municipal Bureau.

I’m not familiar with Baisong near Tian Gen, but I felt that the driver didn’t take too many detours. He found a big restaurant less than two kilometers away, and it was still open at the moment.

Bai Song asked and found out that he had to wait for half an hour, so he paid the driver and asked the driver to leave first. He ordered three roast ducks to be taken away.

There are a lot of people there, so just give it a try.

Sitting here was really boring, so Bai Song downloaded Douyin, followed Lao Zheng and Zhang Wei, and started browsing casually. I used to brush it up casually at Tian Gen's place, but now I have time to read it slowly.

Zhang Wei is really good at making jokes. He has made more than 100 short videos, some of which are quite funny, while Lao Zheng is much more professional and all of them are beautiful photos.

Bai Song had thought before that if one day Zheng Can and Zheng Yanwu's father and son met, then Zheng Can could be Zheng Yanwu's driver. Of course, this is just a thought. Bai Song had promised Feng Yiling not to let Zheng Yanwu ask about Zheng Can's affairs, and Zheng Yanwu himself had no such idea.

Thinking of this, he had to recall Feng Yiling, who knew him very well. If Feng Yiling hadn't finally recruited his younger brother and others, Bai Song even suspected that X was related to Feng Yiling.

Feng Yiling and Bai Song actually didn't have much hatred. If Bai Song hadn't come into contact with Zheng Can, which made her panic, she wouldn't necessarily have targeted Bai Song. After all, targeting a police officer was really serious.

And since Bai Song is so targeted now, he can only consider what the relationship between X and the fake stewardess is, or that the case he is currently investigating does involve X's life safety.

Or, X himself is a psychopath.

Judging from the two cases designed by You will be fooled around by him, and every time you will fall short and fail to achieve perfection. This design for Bai Song is probably the "masterpiece" he wants to complete.

From this perspective, the harm of X is still great. It's just that Bai Song still doesn't quite understand why this X is so strong and how he can understand him to this extent. He carefully reviewed the incident where he called the police and said he saw someone in the river. Although he was fished out and it was confirmed through that incident that he was involved in the corpse dismemberment case in Shangjing, that was all he could understand. he?

This suddenly reminded Bai Song of something. When he was handling cases in Southern Xinjiang Province, the last little girl had a book compiled by them. Later, he asked Yan Yu to check it at school and found out that someone had sold the book.

Could it be that this X also obtained this book and studied it carefully?

Thinking of this, he suddenly realized that over the years, whether it was social media or online news, whether it was official textbooks or the novels he and Xu Fang wrote together, there were too many things that could reveal his own character. If X was enough Being smart can indeed analyze a lot of things.

At present, he has been in contact with X three times. Not only is X analyzing him, he also has his own analysis of X. According to Bai Song's current thinking, if there is one person who has been in contact with X and knows something about him, such as Wang Shichun, then the image of X will be much fuller.

"Sir, your roast duck." Bai Song was thinking about it when the waiter came over with two large plastic bags, which included six boxes of duck meat and three large boxes of salt and pepper duck racks. In addition, there were a bunch of sauces and cakes. , shredded green onions, etc.

Bai Song no longer thought about these messy issues, because he had already settled the bill in advance, so he went out and took a taxi to the city bureau.

In the car, he didn't chat with the driver. Then he reflected on himself for a while and discovered that he had many shortcomings, that is, he always pursued perfection too much. His father-in-law once said something to him, and he gradually understood it.

When many big leaders are doing things, they always give people a very calm, unhurried and unhurried appearance, and they do not delay the handling of cases at all. This is a kind of accumulation of experience. Bai Song feels that he is still far behind.

Thinking of this, when Bai Song went to the city bureau, he got out of the car and walked a little slower.

This seemed to be the first time in so many years that he was deliberately slowing down his walking speed.

The city bureau was still very lively at the moment. When everyone saw Bai Song coming and bringing the roast duck, they all gathered around.

"Okay, that's interesting." Wang Liang stared at the screen without looking back, but he could already smell the smell.

"What are you busy with so seriously?" Bai Song asked.

"I'm responsible for monitoring," Wang Liang said, "Hurry up, make me a roast duck and feed me one."

"Okay, no problem~" Bai Song smiled.