Lin Xiuyi exchanged five bills of 2,000 yen for this 10,000 yen. However, banknotes are meant to be used for circulation, so they are not good materials for fingerprinting. But in any case, this is a completely new discovery after all. And the reason why Sentaro can't spend this banknote is probably because most merchants will think that it is the money he stole from his parents. It is for this reason that this banknote is still intact in the hands of Sentaro until now.

Why did the sender hire a child to help him deliver the letter for the second time? Lin Xiuyi didn't know at all, perhaps because he was afraid that sending these strange things through the normal postal system would arouse the suspicion of the courier company. So next time, what method will the sender use to continue to harass Akemi Sonoji?

On the way back, Supervisor Yuan Zhizhu kept playing with the banknote in his hand. Unfortunately, it is difficult to extract key evidence from banknotes because of their circulation. So this banknote, which was handed to Sentaro by the sender himself, does not have much value at the moment.

"How did you say the suspect knew about Akemi's residence?"

Lin Xiuyi asked Yuan Zhizhu while driving the car.

"I don't know, but the filming plan of the series of "Island Doctor" has been announced by the TV station on the website early in the morning. If you want to understand, it shouldn't be difficult!" Yuan Zhizhu replied absentmindedly.

"I know this, I'm asking him how he knows exactly which room it is? Don't you think it's strange? I didn't know it the first time!" Lin Xiuyi reminded Yuan Zhizhu suddenly, as soon as these words came out, Yuan Zhizhu immediately stopped what he was doing, and clipped the bill back into his notebook.

"Could it be that the first time she delivered the package was to throw stones to ask for directions, what if Miss Sonoji returned to her room with the package, and the person who sent the package followed him?"

Yuan Zhizhu told Lin Xiuyi about a hypothesis he had proposed.

"Your hypothesis is yet to be proven, but I don't think it's very likely. First of all, the crew will definitely try their best to arrange Miss Sonoji's room in a relatively hidden place for the sake of smooth shooting. According to Miss Sonoji's own recollection, it was late when they came back that day, and no other guests were found in the hotel hallway. Of course, it is not ruled out that the other party has the ability to hack into the hotel's surveillance system, but I don't think it's very likely. Because if it works, the first hand should be the newspapers that publish gossip news and not some guy who likes to send blood letters......"

Lin Xiuyi in turn analyzed Yuan Zhizhu, although he denied the hypothesis put forward by Yuan Zhizhu, but he did not anger the other party. On the contrary, Lin Xiuyi's words really made Yuan Zhizhu hear it in his heart.

"Then you say, why did the sender know Miss Sonoji's room number?"

Yuan Zhizhu asked Lin Xiuyi curiously.

"I don't know, but it's a question worth investigating!"

Lin Xiu smiled and continued to focus on driving. Although the car under him is a used car, the price is far beyond the level of a new car. Lin Xiuyi felt that as an office worker, it was enough to be able to occasionally drive such an unavoidable classic car to have a good time, and for him, GTR may still be a more achievable goal. Of course, this will be after he returns from the United States.

Just after the car was parked steadily in the underground garage of the hotel, when Yuan Zhizhu opened the door and wanted to get out of the car, Lin Xiuyi suddenly stopped him.

"Overseer, may I ask a question?"

Yuan Zhizhu sat back in his seat, looking at Lin Xiuyi with some confusion, not understanding what he was going to do?

"Excuse me, where do you usually learn about Miss Sonoji?"

"Do you still need to ask, of course, it's on SNS like 755, and she herself often interacts with fans on 755. This is also a very important reason why so many people like her......"

"755, thanks for the tip!"

Lin Xiu said clearly.

"Why, you're going to investigate from this aspect, I can tell you, Miss Yuannoji's fans are not a minority, if you really want to investigate this aspect, it's not something you and I can do!"

"No, I just want to experience what it's like to be obsessed with a girl idol. I beg your pardon, but my usual interests are not here......"

As soon as Lin Xiu finished saying this, he pulled out the car keys and handed them back to Yuan Zhizhu. After the overseer took the car keys, the two of them left the car together, and walked in the direction of the elevator one after the other.

……

After nightfall, Lin Xiuyi finally finished the day's investigation, and Lin Xiuyi soaked his whole body in warm hot water. Under the action of buoyancy in the water, the body is greatly relaxed.

Download the most popular SNS App - 755, and then use your Facebook account to enter the 755 interface. Lin Xiuyi found the figure of Akemi of Yuanneng Temple on the first page.

"It's so popular!"

755 was co-founded by Takafumi Horie, the former chairman of Vitality Door, one of Japan's top three portals. The reason why it is named 755 is because Takafumi Horie was numbered 755 when he was serving his sentence in prison (if you are interested, you can search for it yourself, he almost bought Fuji TV). The biggest difference between this app and other SNS is that you can enjoy a one-on-one chat with celebrities. Of course, for those celebrities with many fans, it is impossible to reply to every fan's message, but if you are lucky, you can really discuss a topic with your favorite star.

Because of this new user experience, 755 quickly became the most popular SNS software as soon as it was launched. Lin Xiuyi quickly understood the basic gameplay of this volume of software.

On the 755 interface of Akemi Sonoji, there is a lot of interaction with fans, and of course, there are also a lot of photos taken during breaks. It can be seen that Akemi Sonoji is an idol who likes to share her life with her fans. You can see it from the daily interactions. For example, ten days ago, on the day Akemi and Reina went to the streets, Akemi posted a lot of interesting street photos on her 755 account. There are even funny photos of her and Reina. It's no wonder that fans know about her itinerary.

Just when Lin Xiu was looking through the messages and photos from the day the two of them went out, suddenly a photo caught Lin Xiuyi's attention.

In this photo, Akemi is seen leaning on the sofa with her cheeks in her hands, and the message is that she wants to be lazy to see cherry blossoms or something. However, the reason why this photo aroused Lin Xiuyi's interest was not because of the message and Akemi herself, but because of the reflection on the wall opposite her. A pointed reflection is now on the wall opposite Akemi, and combined with the time when this photo was published, it's no wonder that the sender knows where Akemi is!