After Luoluo and her father and mother arrived at Grandma Li's house, she felt that the little girl who was a little strange here was very obediently snuggled up to her mother's lap, she didn't want to sit, she could still turn her little body and secretly look at those strange furnishings.

For example, a dark and shiny, muscular wooden cow placed on the TV table attracted the attention of the little girl, and she pursed her small mouth tightly and looked intently for a while before turning her gaze elsewhere.

It's not pretty!

Ugly, or meow millet is good-looking......

However, in the process of looking around, the little girl felt the gaze of the grandmother! She timidly raised her eyelids to look at Grandma Li, and found that Grandma Li was indeed looking at her, and she was talking to her parents while looking at herself!

Not...... No......

Luoluo's two little hands grabbed her mother's knees, a little restrained, and a little unwillingly twisted her little body slightly, pursed her little mouth and looked to the side.

It's like covering your ears and stealing a bell!

After a while, Luoluo's big round eyes blinked again, and quietly turned back, and she secretly looked at Grandma Li.

Ah......

Grandma Li just glanced over again, and the little girl hurriedly turned her big smart eyes back like a frightened rabbit.

Actually, Grandma Li just thinks that the battle of the Xiaoxia police is a bit too big, and it doesn't matter if she helps her solve the case and brings an "assistant", and she also brings a child over.

That's why Grandma Li will occasionally look at this child, but she is very confused now, thinking about the money she was cheated of, and she doesn't have the energy to ask Xia Yu, and she doesn't even gossip about anything in her heart.

She didn't know that she inadvertently looked at Luoluo, and her panicked eyes made this little girl uncomfortable!

Luoluo finally couldn't help it, she pouted her little mouth, left her mother's arms, and quietly squeezed her little body to her father, who was a little farther away from that grandmother.

Yang Yan was busy installing some equipment on the phone with a screwdriver at this time, and he didn't have time to pay attention to her.

Luoluo sullenly grabbed the corner of his father's clothes with his two little hands and played with it. She didn't seem to want to disturb her father, but some small movements still revealed her careful thoughts—she saw that her little buttocks were like a pendulum clock, gently shaking, and hitting her father like nothing.

"Dad doesn't have time to play with you now, what's wrong?" Yang Yan had no choice but to free his hand and gently rub the little girl's head with the back of his hand.

"Hmm......" Luoluo pouted, wanting to complain but didn't know where to start, so he could only let out a muffled snort unhappily.

However, when she turned her head and looked for Grandma Li and wanted to point it out to her father, the little girl found that Grandma Li was there, pinching a tissue and wiping her tears!

Hey?

The little girl blinked her big eyes in confusion.

Why do you cry?

Luoluo suddenly forgot what she was going to say to her father just now, she grabbed the corner of her father's clothes with one hand, raised it slightly with the other, did not raise it, and stood there in a daze to look at the crying Grandma Li who was a little pitiful.

Yang Yan followed her daughter's gaze and looked over, thinking that she was caring about the crying Grandma Li, Yang Yan hugged her daughter's little body lovingly, but because she was still in a state of cold, Yang Yan did not kiss the little girl's little face.

"Aunt Li, don't worry, aren't we trying to figure out a way now? We will definitely do our best to help you catch these scammers and help you recover the money as much as possible!" Xia Yu comforted.

Just now, she was asking Aunt Li Qiongzhen about the arrangements of the police station, obviously, the station only agreed to help track down the account involved in the case, but the action was much slower than Xia Yu's, and she hadn't even sent someone to the door for further understanding.

Of course, this is also related to the lack of police force in the Shaping Street Police Station, such a fraud case, the investigation period is very long, and it is not easy to detect, the police do not keep a close eye on it like a matter of human life, and it is normal to move slowly.

"I checked the phone number I called Aunt Li just now, and it is not a real number as I thought! They should use VOIP equipment to change the number, and then use the Internet voice to carry out overseas Chinese communication, so that they can use the disguised number to talk to Aunt Li's landline. Yang Yan also opened his mouth to comfort Aunt Li.

However, Xia Yu couldn't understand what he said technically, let alone Aunt Li.

"So do you have a way to bypass this disguise and trace their whereabouts?" Xia Yu asked directly.

Yang Yan just wanted to speak, but suddenly felt an itch in his nose, couldn't help but raise his head, and then turned his face to sneeze. Seeing this, Xia Yu quickly pulled out a few tissues next to him and handed them to him with a worried face.

"It's okay, it's okay!" Yang Yan blew his nose with a tissue, and then continued to smile and said: "It can't be said to be a bypass camouflage, what I want to do now is to intercept their data packets, and then analyze that they are using the VOIP service secretly developed by that operator, which is generally illegal, but there are always some people who take risks." ”

"As long as we can find out which operator it is, I can enter their servers from the network and find out the IP address of the network that made this fraudulent call! These guys can buy Aunt Li's personal information, and they can also use some VOIP technical means, and they do have a little ability, but I don't believe they will have such a powerful anti-reconnaissance ability, and they will play tricks on IP addresses that are almost impossible for anyone to find!"

Xia Yu and Aunt Li both looked at Yang Yan blankly, unable to understand what he was saying at all, but Yang Yan's confident expression still gave them a lot of confidence.

"How can you track them down?" Xia Yu asked.

"This is a passive process, we have to wait until these people call, and then I can intercept their packets through my signal converter equipment!" Yang Yan pointed to what he had placed on the table and said to Xia Yu.

In fact, Yang Yan has omitted a lot of technical details, such as the traditional telephone line is through ADSL, the digital signal of the computer is modulated into an analog line number to transmit through the telephone line, and Yang Yan is the opposite, he mediates the analog line number into a digital signal, so that he can use the computer to analyze the data transmitted inside!

Of course, the equipment that Yang Yan researched and assembled himself is still a bit complicated, it can carry out one-way input and two-way output, which can ensure the continuity and quality of the original telephone conversation, and can also complete the copy of data.

"So we just have to wait for them to call, and then we can arrest them, right?" Xia Yu still didn't understand, so he had to confirm with Yang Yan again and again.

Yang Yan smiled, pointed to the phone, signal equipment, and his computer, and said: "That's right, they called, I intercepted the data, analyzed, and found out their IP address, and then I had a way to locate them!"

It's the same as the reason Yang Yan used to check the location of those traffickers before!

Xia Yu nodded half-knowingly this time, she clenched her fists confidently, and said to Aunt Li: "That's good, Aunt Li, we'll wait patiently for their call." ”

"But don't be surprised, because it takes time for us to track down their addresses, and if they notice and move out of there, it will be very difficult for us to find them again!" Yang Yan reminded from the side.

Xia Yu patted his thigh, and suddenly realized: "Yes, Aunt Li, I still have to help you make up a cliché about how to deal with these fraudsters when the time comes, you pretend not to recognize them yet, you just need to use the excuse I gave you to tell them, let them wait for you for a few more days, and then show an attitude of being very interested in that physical examination card......"

Xia Yu had learned negotiation skills, she took out a pen and paper, and explained to Aunt Li Qiongzhen one by one.