Yu Fan sat up, he began to think again, this texture of paper made him very familiar, as well as the size of this paper, the holes on both sides, these are very familiar.

The previous reasoning was based on the assumption that "direct information can be obtained from the document bag", but now Yu Fan pulls his thoughts back, does not make assumptions, and only makes inferences from the evidence observed by the eye.

Yu Fan walked out of the office, his instinct told him that he often saw something similar to this piece of paper, so what could it be? Yu Fan walked around the company.

"Squeak...... The sound of squeaking ...... suddenly attracted Yu Fan, it was the sound of a dot matrix printer, and Yu Fan walked over. The dot matrix printer is printing an invoice.

Pregnant!!!

Yu Fan suddenly realized, he took the invoice directly from the dot matrix printer and ran back to the office, which made the printer look a question mark and didn't know what Mr. Yu wanted to do.

Yu Fan compared the invoice with the blank piece of paper. This! Isn't this the paper of the invoice? The texture is the same, the holes on both sides are about the same, and the size of the paper is almost the same. Yu Fan had a bold assumption that the paper sent was actually used to type invoices, not ordinary paper, or rather, this was originally an invoice. Now, the scope of the analysis has narrowed down a lot.

Yu Fan called Cao Ben and asked: "Lao Cao, you help me check a matter, can you see if any company has sent us an invoice before New Year's Day?" ”

Cao Ben readily agreed and went out. Yu Fan secretly rejoiced in his heart, haha, there is finally hope.

Cao Ben came back soon: "Lao Yu, I found it, this is very easy to check, generally the company will settle the financial settlement before the 20th of each month, and no invoices will be issued, especially at the end of the year." But this company is a bit special, they also gave us an invoice on the 25th, and sent it to us on the same day, I was very impressed, I said at the time that it was too late to wait for New Year's Day to send it, but they were more active than us, and they had to send. This is the only one that sent invoices after the 20th of last month. ”

Yu Fan: "Great, you can help me contact that company, ask them which courier they sent, and ask for the courier number." ”

Cao Ben: "Lao Yu, do you mean that this blank courier is an invoice sent by them?" How is that blank? “

Yu Fan: "I'm not sure about this first, you can help me ask for the information I want." ”

Cao Ben: "Oh. "It's out.

Soon, Cao Ben sent the message: "YT Express, the tracking number 1927368922."

Yu Fan opened the webpage, found the official website of YT Express, entered the tracking number, and the express information came into view. Sent on the 25th, various transfers in the middle, and finally arrived on the 29th, signed for receipt. I don't know when it started, the courier didn't need to sign for the delivery, and the courier didn't care if he threw the courier to the destination.

It seems that this courier is right, the invoice, and the time also coincide. And the most exciting information is the name and phone number of the courier at the last stop: Lan Blunt, 138XXXXXXXX.

Why is the tracking number blank for the document bag? Why is the invoice blank inside? Why did you secretly play a prank on Yu Fan and stuff that mysterious pattern? Wait a minute. The answer to a series of questions can be behind this courier named Lan Dull, and what Yu Fan has to do is to dial this phone and let everything fall into place.

It's as if we have not only found the treasure chest, but also found the key to open the chest, and all that remains is to insert the key and unscrew the lock.

Thinking of this, Yu Fan was very excited, he picked up his mobile phone, took a few deep breaths, and broadcast the call.

After about 3 seconds of silence, the phone came in, "Sorry, the call you made is on a call, please call again later." ”

Hey? can't get through, could it be that this Lan Dull blocked Yu Fan's phone? This made Yu Fan want to know who this courier brother was.

Yu Fan waited for a minute and broadcast it again. And this time......

The call finally worked.

The phone was connected very quickly, not even the ringtone, it seemed that the phone was at hand, and the reason why the phone was not answered just now may be that it was really calling.

"Hey!" The voice on the other side of the phone, the word "hey" is four tones. Speaking of this, Yu Fan remembered a psychological phenomenon that people discussed, saying that the word "hey" when young people answer the phone is generally read twice, while the word "hey" when middle-aged people answer the phone is generally read four times.

Yu Fan didn't speak, but pricked up his ears to listen carefully to the environment opposite. The other end of the phone was obviously a little baffled by the lack of response here, so he "hey" again, this time twice. Yu Fan still didn't speak, and muttered a few words on the other side, but Yu Fan didn't hear clearly, so he hung up the phone over there.

Yu Fan put the phone on the table and counted silently, one, two, three, four, five, six, Yu Fan's phone rang, it was the Lan blunt call just now. If a person has recently done something unconscionable, then when he encounters something ambiguous, he will definitely seek to verify it, because such people are often worried that what they have done will be exposed and then suffer bad results, so their anxiety will definitely force them to determine whether these ambiguous things are due to their own actions. Yu Fan used this little trick to support his inference.

The phone rang more than 10 times, hung up, and after five or six seconds, it called again, this time, Yu Fan still chose not to answer the phone, and the phone rang more than 10 times and hung up again.

After hanging up the phone, a text message was sent to Yu Fan: "May I ask who you are?" ”

Yu Fan didn't reply, it can be imagined that the other end of the phone must have been very anxious, like ants on a hot pot.

At this time, the phone came in again, and Yu Fan picked up the phone this time. The other end of the phone: "Hello, who are you?" ”

Yu Fan still didn't speak, but he deliberately increased the sound of his breathing so that the other side could hear it clearly, and let the other side know that I could hear your words, but I just didn't respond. This makes the other end of the phone even more anxious and reveals flaws.

On the other side of the phone: "Are you sending a courier?" Who the hell are you? If you don't speak, I'll hang up. ”

At this time, Yu Fan spoke, and Yu Fan deliberately lowered his voice very low: "Who am I, shouldn't you know best in your own heart?" ”

Yu Fan continued to use ambiguous words to probe the test.

There was silence on the other side of the phone for a few seconds, and he said, "I really don't know who you are, is there anything wrong with you?" The tone was obviously a lot softer, and it seemed that Yu Fan's strategy had worked.

Yu Fan: "Do you want me to be clearer?" Express, don't you count it yourself? Hide, you can't hide. ”

There was silence on the other side of the phone for a few seconds, and then he said, "Okay, I understand, then let's make an appointment to talk in person." This time the tone was very calm.

Yu Fan was a little surprised by this answer, and he didn't know what kind of person, how many people, and what environment he would face, but the truth that was close at hand made Yu Fan unable to refuse this request.

"Okay, let's talk in person."