"Where's the little girl who lives in your house?" The new doctor looked at Chiba with a smile. "It's so late, she should be at home, right?"

"I'm out shopping," Qian Yu said. "I estimate it will probably take another fifteen minutes or so to get back."

"Going out shopping so late?" The new doctor looked surprised. "Did she tell you herself?"

"Text message." Chiba replied. "Uh...... I'll give her a call to confirm. ”

After chatting with the new doctor for a few words, Qian Yu suddenly felt that something was not good, and he could only settle down by calling to confirm with Gray Yuan.

The new doctor looked intently at Chiba's hand looking at the buttons, and didn't say anything.

Then, no one answered.

"......" Qian Yu frowned.

"Didn't anyone answer?" The new doctor took a look at Chiha's expression and guessed the situation.

"Yes." Qian Yu nodded. "What's going on......"

"I'm afraid it has nothing to do with the people who climbed your wall," the new doctor whispered, glancing at Officer Twilight's line of defense where he had written down Fujiwara. "Don't tell Officer Twilight, or you'll be thrown a search warrant by the Metropolitan Police Department."

"What then?" Qian Yu's anxious expression flashed across his face, but he thought of something. "Wait a minute......"

Chiba looked at the new doctor, who was still smiling. "You know something, don't you? You or Fujiwara must know where the next batch of cars came from! ”

"Hmm-that might disappoint you~" The new doctor's eyes were bent into a crescent shape. "I'm sorry, I don't have much to offer, but maybe we can find some clues."

"For example?" Thousand Feathers raised an eyebrow.

"Little girls don't usually run out on their own at night," said the new doctor. "So it's nothing more than being abducted or robbed out of the house. Considering that there doesn't seem to be anything abnormal in your house, you should have been abducted, so can anyone take that little girl out? ”

"Forehead......" Qian Yu thought for a moment, and then suddenly thought of an answer.

Gray Plains is very wary of outsiders, except for ......

Because they both like cats, they have a good relationship with Gray Plains?

"......" Chiba glanced at Fujiwara, who was still taking notes.

"Who do you think of?" The new doctor seems to realize that Chiba has an answer. "Looking at Fujiwara...... Do you think it's that girlfriend of his, Hotaru Mizuko? ”

"Gree......" Qian Yu thought about it and nodded. Maybe there's her. ”

"Then we'll let Fujiwara take us around later," the new doctor suggested. "He should know where that young lady's family lives."

At this moment, the transcript on Fujiwara's side ended.

"So, let's do it for now," Officer Twilight stood up and walked over to Chiha. "Qianyu, I have something to tell you."

“？” Chiba was a little surprised, as he didn't understand why Officer Twilight had come looking for him.

……

In the kitchen, Officer Twilight closed the kitchen door with a solemn face, and turned to look at the confused Chiba.

"Is your family rich?" Officer Twilight asked.

"Uh......" Qian Yu thought for a moment. Barely okay? Before my family died, I left me a fairly generous family fortune. ”

"......," Officer Twilight said solemnly after thinking about it. Listen carefully to everything I say next. ”

“？” Thousand Feathers tilted their heads.

"Someone's targeting you," Officer Twilight said. "And it's likely that these people are within the police class."

"......," Qian Yu showed a surprised expression. The police? ”

Someone from the police department was staring at him, and Chiba knew, but Chiba didn't know how Officer Twilight knew about it.

"Yes," Officer Twilight said solemnly. "Listen to me, if a police officer wants to enter your house in the future, you ask him to show a search warrant. If you can't get a search warrant, call me right away, understand? ”

"Understood...... Qian Yu obviously didn't understand what was going on, but nodded immediately.

"Okay," Officer Twilight patted Chiha's head. "If you get into trouble, call me directly, too."

With that, Officer Twilight walked out of the kitchen, leaving Chiba alone with a confused expression. "Let's go outside and take a look at the scene, so we won't bother you yet."

"We might have to go out, we're so hungry that we'll have to buy something to eat." Qian Yu said. "So we went out the back door? This should not disrupt the site. ”

"Excuse me," Officer Twilight replied. "Be safe, though."

With that, he beckoned the other policemen and left through the front door.

"What are you talking about?" At this time, Fujiwara turned to Chiba and the new doctor and asked. "Doesn't seem like an easy thing to do?"

"Don't you think there's one less person?" The new doctor motioned to Fujiwara to think for himself. "The little guy thinks that little girl might be at your girlfriend's."

"Is it in Hotaru?" After listening to Chiha's inference, Fujiwara raised his eyebrows. "Well, it's possible, let's go check it out."

"That," Qian Yu said suddenly. "Can you tell me Miss Hotaru's mobile phone number?"

“？” Fujiwara glanced at Chiha, then told him a string of numbers.

"......" Chiba nodded, and then the auxiliary unit began to work.

Just now, Qianyu opened a brain hole, and then directly did an experiment - since the mobile phone call is performed through the base station, can you simulate the call by doing something in the base station that Qianyu can simulate?

The principle of mobile phone communication is very simple - first the communication request is made through the base station, then connected to the base station where the callee's mobile phone is located, and finally the communication request is conveyed through the base station where the callee is located.

So in this process, the base station where the callee is located will be submitted - the base station simulated by Qianyu's auxiliary unit can extract this data.

The auxiliary unit has completed the learning of the call behavior of Qianyu's mobile phone, and can directly simulate the signal of Qianyu's mobile phone as a base station without connecting the mobile phone, and then send communication requirements to the mobile phone under the control of other base stations.

While Chiba was working, she left Tachibana House through the back door with the new doctor and Fujiwara.

The first call was to Gray Hara's mobile phone.

After about five seconds, the communication enters the time to call the callee through the base station, and the base station number has been passed through. Chiba ended the communication as soon as she got this data, so that potential disadvantagers wouldn't find out that she had made a call.

The second call was made to Hotaru's mobile phone, and the base station number was soon passed in as well.

The two mobile phones belong to the same base station - considering the density of base stations in the city, this means that the distance between the mobile phones of Gray Yuan Ai and Hotaru will not exceed 100 meters.

"......" Chiba was silent and got into the new doctor's car with Fujiwara.