"This ......" Hearing Fang Rui say this, Lu Shuang's face was obviously embarrassed.

"Please, this is very important to us, this is a human life!" Fang Rui tried to make the matter as serious as possible.

Lu Shuang was still entangled, and both of them were silent for a while. Finally, Lu Shuang entered the bathroom, and after a few minutes, she walked out.

"Come with me!" Lu Shuang whispered to Fang Rui. Hearing Lu Shuang say this, Fang Rui felt that there was a play, and the brows that had just been slightly furrowed stretched a little, and there was finally a smile on his serious face.

Following Lu Shuang, Fang Rui walked through several doors, turning left and right. The inside of this large state-owned company is so complicated! Fang Rui thought so in his heart, and almost lost it several times.

"Ordinary people are not allowed to enter the back, and some trade secrets are involved. "Maybe he saw Fang Rui's thoughts, Lu Shuang explained.

"Where are you taking me now?" Fang Rui asked.

"Take you to a place that can help you! By the way, this is my business card, and when you find your answer, call me and I'll take you out, don't run around." After speaking, Lu Shuang handed Fang Rui a business card.

Fang Rui looked puzzled, although this is a large state-owned enterprise, it is not so mysterious. But it didn't matter for his purposes. Taking the business card, Fang Rui followed behind Lu Shuang and entered a steel door. The reason why it is said to be a steel door is because the door looks like a stainless steel color.

"Networm!" Inside, Lu Shuang patted the person sitting in the game chair behind a row of computer monitors.

"Yo, it's coming pretty fast!"

A man's voice, no, should I say a child's voice. Lu Shuang stepped forward, took out a lollipop from his pocket, and handed it to the person in the chair.

"Thank you, Sister Shuangshuang!" Fang Rui couldn't believe his eyes when he saw the person in the chair stand up. Like his voice, this guy's body is also a child, and he looks a head shorter than Lin Jiaming.

"How can there be children in this state-owned enterprise?" Fang Rui asked suspiciously.

"Uncle, who do you look down on! What's wrong with the child, that law says that children can't come here to work?" the child protested.

"No, no, I'm just surprised, many children of your age are still in junior high school!" Fang Rui thought about it, remembering that when he was in junior high school, he was not as tall as the child in front of him, and he was only tall in high school.

"Okay, without further ado, you hurry up and help this Uncle JC...... Brother~" Seeing that Fang Rui and this kid had some slight friction, Lu Shuang was playing a round on the side.

"Sister Shuangshuang, your vision is okay this time, better than the one last time!" the child took a large look at Fang Rui and said to Lu Shuang. Lu Shuang's face turned red and slapped the child directly on the head.

"What nonsense!"

"Okay, okay, don't talk nonsense, don't talk nonsense! Brother policeman, tell me, what do you need?" the child sat down and searched between the many monitors, but didn't seem to find what he was looking for.

"I want to locate a mobile phone, it's a girl, she may have been kidnapped!" Fang Rui's face became serious again.

"Sister Shuangshuang, do you hear me, he has a girlfriend!" the child bent down and picked up a notebook under the table.

"Finally found you!"

"Hurry up, I'll ignore you in the future!" Lu Shuang's face turned even redder, Fang Rui's face was also a little embarrassed, and what was even worse was that the two looked at each other, when the two embarrassed eyes met, it was a terminal illness! It was a child who caused this embarrassing scene, but he turned a blind eye to it, fiddling with a bunch of things in front of him who didn't know what it was.

"Do you know the phone number?" the child asked.

"Know...... I don't know!" Fang Rui pulled back his eyes as much as he could.

"Do you know or don't know?" the child looked at Fang Rui and Lu Shuang with some amusement.

"I'll call and ask!" Fang Rui stepped aside and dialed Lin Jiaming's phone.

"Hey, old Fang, why did you call, how's it, how is it, have you found it?" As soon as he beeped on the phone, he heard Lin Jiaming's eager voice.

"Don't talk nonsense, report your girlfriend's phone number!" Fang Rui patted the child's shoulder, the child had already turned on the computer, and put his fingers on the number keys.

Lin Jiaming finished reporting the number, and the child had already completed the steps of entering the number. The child also learned Fang Rui's action just now, patted Fang Rui's leg, and signaled that it was done.

"Okay, keep waiting!"

"Hey~ Lao Fang...... Old ......" Before Lin Jiaming finished speaking, he was rudely hung up by Fang Rui. Lin Jiaming even asked Fang Rui in his heart if he was deliberate! But now he has no other way than to circle around the blue building like an ant on a hot pot.

"Sister Shuangshuang, did you hear it, it's someone else's girlfriend!, you can rest assured!" In the building, the child's fingers were rapidly tapping on the keyboard, but this did not prevent him from teasing Lu Shuang, and by the way, Fang Rui also teased.

"Children, can you hurry up, this is saving people after all!" Fang Rui was a little anxious when he saw that the children still had the heart to tease them.

"Brother JC, this is not a science fiction movie, it is not so fast! Let me tell you the principle of positioning, and by the time I finish speaking, I will almost be able to complete the first step. Oh~ By the way, I have a name, my name is Zhang! I'm not a child, I'm 15 years old!"

"Zhang Liao?"

"Zhang, 'know it in your heart'!" Worried that Fang Rui didn't know this idiom, Zhang Liang also took his hand and wrote it in his palm.

"Okay, Brother Ran, let's get down to business first!"

"It's Zhang!"

Since he was admitted to JC, he has dealt with all kinds of vicious criminals, and has also dealt with old people with Alzheimer's disease and lost children with snotty faces, but he has never dealt with children of this age.

"Brother JC, I won't tell you much about the rest, I'm afraid you'll be confused if you talk too much! I'll just tell you about the positioning of the base station we are going to use today. The so-called base station positioning refers to the mobile device measures the downlink pilot signals of different base stations to obtain the TOA of the downlink pilots of different base stations, and the arrival time difference. According to the measurement results, combined with the coordinates of the base station, the trigonometric formula estimation algorithm is generally used to calculate the position of the mobile device. In general, if the mobile station measures more base stations, the higher the measurement accuracy, the more obvious the improvement in positioning performance. Zhang said a lot, and Fang Rui was heard in a fog, and he performed what it means to be "interlaced like a mountain" on the spot. Of course, Lu Shuang was also confused. However, Zhang Li didn't care whether they understood it or not, and continued to pour bitter expertise into Fang Rui and Lu Shuang in his own world.

"So, in order to make the measurement results more accurate, you need to locate several more base stations, which means more time. Of course, there is a premise for all this, that is, the SIM card that is designated as the SIM card must be turned on. If it's turned off, everything will be in vain!...... just like now" Zhang pointed to a series of English codes and numbers on the black background of the notebook, and Fang Rui was still confused!