When Chen Zhu's father came back, the garage had been almost tidied up.

A middle-aged man was pushing a motorcycle, standing blankly under the street light.

"Dad Chen Zhu!" Lin Chaoxi noticed him first and greeted him while waving a rag.

"Lin Chaoxi, why are you here?" Old Chen quickly stopped the car, walked over hurriedly, and blushed when he saw the brand new garage.

"Learn from Lei Feng on March 5th." Lin Zhaoxi said with a smile.

"Uncle, don't listen to her nonsense! We wanted to use a computer, and Chen Zhu said you had one, so we wanted to sort it out and see if we could set up a few. I'm really sorry that I didn't tell you." After Lu Zhihao finished speaking, he bowed with a gray face and a particularly sincere attitude.

"It's okay, it's okay, you guys use it, you guys use it." Old Chen said hurriedly, but then he thought it was not right, so he asked, "But how do you guys form a team? Or should I call Uncle Chen Zhu over this weekend?"

"No need." Chen Zhu popped his head out from behind the garage shelf and pointed at Pei Zhi who was working under the light.

There were a lot of disassembled computer circuit boards piled on the old table in the garage. Pei Zhi stood in front of the table, inspecting the assembled "computer".

Well...if that thing can be called a computer...

The circuit board was completely exposed, not installed in the chassis, and looked suspicious overall.

"Can this be used without even a shell?" Lao Chen then asked.

"Theoretically, yes." To ensure the accuracy of the answer, Pei Zhi added, "But if the circuit board is damaged, it's hard to say."

"Just give it a try!" Lin Chaoxi said with a smile.

Pei Zhi nodded, found a video cable, and connected the "computer" to the monitor. Everyone held their breath, the screen lit up, and the characters slowly appeared...

In the garage, the exclamations of Chen Zhu and his father echoed.

When they saw the computer light up, Lu Zhihao rubbed the dust off his face, and Huajuan continued to put things away. She squeezed the dirty rag into the bucket and didn't think there was anything strange at all.

"Young man, you're awesome." Old Chen patted Pei Zhi's shoulder vigorously.

"The knowledge of hardware is relatively basic, and you just need to understand the model adaptation." Pei Zhi said.

"It's a normal operation," Hanamaki said.

Old Chen was stunned, not knowing how to respond.

"Uncle, do you still want these things?" Lin Chaoxi asked him with a smile, pointing at the pile of cardboard shells he had packed up.

Lao Chen was embarrassed: "They are all useless things, and I never threw them away."

"I see there's a scrap yard at the door. Should we sell it there?"

"Okay."

After listening to what Lao Chen said, Lin Chaoxi picked up a pile of cardboard and put it on his shoulders.

"Uncle, let me carry it. Chen Zhu, come and help. How can we let girls carry things?" Old Chen hurried over and grabbed it.

But before Lin Chaoxi could say anything, she heard Lu Zhihao say, "She is very strong."

"Eat a lot." said Huajuan.

"It's okay." This is Pei Zhi.

Chen Zhu then stood still, his actions speaking volumes.

Lin Zhaoxi: “…”

——

Lao Chen still felt embarrassed, but since the kids all said so, he could only follow their lead.

It was already completely dark, and many of the street lights in the neighborhood were out of order.

The weather was still a little cold. Lin Chaoxi sneezed and then noticed that the surroundings were very quiet. She and Lao Chen had not spoken a word on the way here.

Lin Chaoxi looked at Lao Chen.

Lao Chen said, "You two have a really good relationship."

This sentence is a bit light, as if I was just saying it because I couldn't find a topic to talk about. Now it seems a bit awkward.

"We were classmates in elementary school and went to the same junior high school," she said.

"No wonder, Chen Zhu said you all have good grades." Old Chen paused and said, "Chen Zhu didn't have many friends before, but you were able to play with him and help him study. Thank you."

“We help each other!”

Lin Chaoxi was afraid that Lao Chen would specially thank her for the winter vacation cram school, so she interrupted him quickly.

Moreover, they first met Chen Zhu simply because she wanted to find a black Internet cafe to surf the Internet...

"If there's anything your uncle can help you with, just tell me directly," Chen Zhu's father said sincerely. Perhaps he couldn't find any other way to express his gratitude.

"Did I really raise it?" Lin Zhaoxi stopped and said shamelessly, "Can you increase the speed of your home broadband? We want to come to your house to surf the Internet in the future..."

"That's definitely no problem." Old Chen patted his chest, "I feel more at ease with you guys supervising Chen Zhu's online use!"

Old Chen happily carried the cardboard and continued walking forward. When he was almost at the entrance of the new village, the bustle outside seeped in. Lin Chaoxi looked at Old Chen's back and stopped. She didn't know where she got the courage from, and she said, "Uncle, there's one more thing!"

Lao Chen stopped walking. He was still in his traffic police uniform. He looked tired and haggard, but also very upright and handsome.

"What is it?"

"I want some traffic data for the city. I wonder if it's possible."

——

Lin Chaoxi’s current idea is to use some kind of algorithm to prevent Lao Lin from getting into car accidents.

But she didn't have much idea about what the algorithm was or how to calculate it. First, it involved too much mathematics and programming knowledge, and second, she was far away from all that knowledge.

But no matter what, she knows that big data is always the foundation for any predictive algorithm. The remaining two are mathematics and computers.

It was a little too early and abrupt for her to ask Chen Zhu's father, but Lin Chaoxi somehow just asked.

It was like fate had changed. Back then, Lao Chen was busy dealing with Lao Lin’s car accident case. Now that he was doing it again, there should be a different ending.

Lao Chen did not agree to her immediately.

He carried the cardboard and put it on the scale at the scrapyard with a puzzled look, and then asked him, "What kind of traffic data?"

"Records of car accidents over the years, data on traffic and pedestrian flow on roads, and..." Insufficient knowledge reserves lead to these problems. When Lin Chaoxi said this, he didn't know what else he needed.

"I can't tell you the accident information. Who hit whom and what happened to whom? These are other people's privacy." Lao Chen said hurriedly, "And you want to record the accidents over the years? On Zhongshan Road alone, there are many accidents of all sizes every day..."

"I don't want those details." Lin Zhaoxi shook his hands, "I just want the data. Our city must submit reports to the higher authorities every year, with the number of car accidents and casualties..."

When Lin Chaoxi said this, he saw that Lao Chen's face darkened: "What do you want these things for?"

The owner of the scrap stall also looked at her strangely, his eyes burning under the light.

Lin Chaoxi feels that it is not only about learning, but making up excuses is actually very difficult and requires talent.

She thought about it seriously, and finally decided not to make up an excuse that was too exaggerated.

"There is a person who is very, very important to me. He once had a car accident..."

Hearing this, Lao Chen's eyes softened instantly. The scrap stall owner looked at her lovingly, and even the shop assistants put down their work and waited for her to continue.

"So I wanted to see if there was any way to prevent car accidents like preventing diseases," said Lin Zhaoxi.

Old Chen was stunned, as if he felt that he had gone too far in asking questions, but as a traffic policeman, he subconsciously asked, "How can we prevent this?"

Lin Chaoxi thought for a moment and said, "When we are driving on the highway, aren't there often warning signs saying that a certain place is a 'high-risk area for traffic accidents, please drive carefully'?"

“Yes, but you said it differently.”

"The simplest application of mathematical statistics in traffic is to count the locations of accidents on a certain road section and issue warnings. Then, to predict and prevent traffic accidents, we need to introduce more data and adopt more sophisticated data processing methods."

"How do we deal with this?"

"I really don't know, I just had this thought."

"You are still so young, how can you think about such difficult things?" Old Chen stopped asking questions here, and his eyes suddenly became apologetic.

After a while, he sighed, patted her shoulder heavily, and asked, "Is it your mother?"

Lin Chaoxi originally felt an inexplicable sadness, because what she was talking about was too difficult and hopeless, but Lao Chen's question suddenly made her want to laugh.

Of course not her mother, she has never had a mother.

But it’s okay without a mother. She has grown up healthily and can try to do things that seem extremely unrealistic.

It's no big deal.

"Can you keep it a secret for me?" She took a deep breath and looked up at Chen Zhu's father. "They don't know."