Song Jinning's mind was completely focused on science. She pointed to a webpage on the computer screen, "I just checked, there hasn't been a breakthrough in graphene extraction technology, so this kind of cell phone battery can't be mass-produced."
Gu Nianzhi immediately gave up when she heard that it would take years of manual polishing to obtain a little graphene material. "Forget it, it's so troublesome."
"Yeah." Song Jinning nodded, "It was also a coincidence that Huo Guanyuan obtained a graphite ore with a special structure when he was on a mission. It was relatively easy to separate the monolayer of graphene from it. He gave the ore to my father as a gift, and my father later gave it to me. I polished it by hand when I was free to extract high-quality monolayer graphene chips. "
Gu Nianzhi listened in confusion, and her eyes became even more confused.
She maintained a smile on her face as she listened to Song Jinning's words with great difficulty. In the end, she came to two conclusions.
One, Huo Guanyuan obtained the graphite ore with a special structure.
Two, Song Jinning used the material Huo Guanyuan found to make a cell phone battery, and gave it to Huo Guanyuan.
It could be considered returning the item to its rightful owner.
So the person who was interested in the cell phone was actually interested in the battery inside, right?
Gu Nianzhi sat next to Song Jinning, looking very interested in the graphene molecular formula Song Jinning showed her, but in fact, her mind had already flown away.
There hadn't been any major breakthroughs in graphene extraction technology in the past decade, which meant that the person who stole the cell phone couldn't replicate Song Jinning's success.
It also meant that the person might not know the key to Song Jinning's success was the graphite ore with a special structure.
"Auntie Song, do you think it's possible for someone to commit murder just because of this cell phone battery?" Gu Nianzhi tilted her head and looked at the mathematical formulas and molecular formulas on Song Jinning's computer screen like she was reading a book from heaven.
Song Jinning thought about it, "If there really is a breakthrough in graphene stripping technology, capital will do anything for profit. But remember, there hasn't been any breakthroughs in this technology, so I don't think it's necessary to kill. "
"… But others don't know …" Gu Nianzhi began to figure out the murderer's psychological state, "Maybe she thought you had a major breakthrough, and finally took the risk to steal the cell phone, but found nothing."
Song Jinning shook her head with a smile. "If the person you're talking about was Bai Jinyi, I don't think she would do that. She is also an expert. When I was making batteries, she also knew that if I wanted to steal the technology, she would have done so long ago. "
They wouldn't wait until six years after the incident to rob them and kill them for their goods.
"Ah? She knows you made this battery? In other words, she also knows that you are using a special graphite ore? "
"Yes."
Gu Nianzhi tilted her head and leaned against Song Jinning's shoulder, unable to speak.
Well, that seemed to be a dead end.
Could it be that Bai Jinyi wasn't the murderer?
Or perhaps the murderer was indeed Bai Jinyi, but she had another motive for taking Huo Guanyuan's personal phone?
Gu Nianzhi's fingers tapped on Song Jinning's computer desk. What was it that made Bai Jinyi so desperate to kill someone and rob them six years later?
…
After leaving Song Jinning's room, Gu Nianzhi didn't return to her own room. Instead, she brought her laptop to Huo Shaoheng's office.
It was already dark, but the office building was still brightly lit.
The staff in this office building worked in three shifts, 24 hours a day, 365 days a year, and there were people there every day.
It was common for Huo Shaoheng and the others to not sleep for days on end.
"Nianzhi is here again? Are you looking for a beating? "Zhao Liangze rolled up his sleeves and walked over with a sinister grin.
Gu Nianzhi pretended to be "scared" and slipped into Huo Shaoheng's office. She locked the door and waved her fist at Zhao Liangze, who was standing outside.
Zhao Liangze gestured at Huo Shaoheng's office door twice, then gave up.
He was just teasing Gu Nianzhi.
Gu Nianzhi turned around and saw Huo Shaoheng sitting behind his desk. The bright overhead light poured down and cast shadows on his face, making his facial features look as handsome and deep as a statue.
Huo Shaoheng's eyes were glued to the computer screen, his hands flying across the keyboard. He wore a shielded headset and appeared to be on the phone with someone.
"You're here?" Huo Shaoheng greeted her without looking up. "Sit."
Gu Nianzhi sat on the circular sofa in the middle of Huo Shaoheng's office.
She put the laptop on the coffee table and winked at the transparent wall of the office.
But the people outside couldn't see inside at all. It was one-way, just like the wall in the interrogation room.
Gu Nianzhi noticed it from outside, so she brazenly made faces at the one-way transparent wall when she came in.
Huo Shaoheng finally ended the call and closed the computer program. He looked up to see Gu Nianzhi raising a pair of pale hands and using the light from the other side of the room to make the shapes of various small animals. She projected them onto the opposite wall.
A duckling that could run, a proud giraffe, and a barking puppy. She was enjoying herself.
Huo Shaoheng got up from behind his desk and sat next to her. He asked, "You talked to my mother?"
Gu Nianzhi nodded and rubbed her hands. She opened the graphene page for Huo Shaoheng to see. "I learned about that amazing battery."
Huo Shaoheng quickly finished the page and shook his head. "I don't think it was for the battery."
"But what did the murderer want the phone for?" Gu Nianzhi couldn't figure it out. "If the phone was lost when Luo Xinxue passed away, then it would have been six years since Huo Guanyuan and Auntie Song died."
"Yeah, there's another possibility. Maybe the phone was lost long before Luo Xinxue passed away, but we just discovered it now." Huo Shaoheng pointed out another possibility. "So let's not waste time. We don't need to know what the murderer wanted the phone for. We just need to prove that the murderer stole the phone from Luo Xinxue. "
Gu Nianzhi immediately understood. "I understand. I was thinking too much. "
It was much easier to find the right direction by focusing on where the phone was.
…
The next day, the mobile company sent them the records of Huo Guanyuan's private phone number.
Under normal circumstances, the mobile company wouldn't give you records from so long ago because it involved too much time and effort.
But with the court subpoena and pressure from the military, they had no choice but to do it.
The mobile company printed the records of Huo Guanyuan's private phone for them. It had been in use for more than 20 years.
Unfortunately, the phone's frequency of use was too low.
Gu Nianzhi discovered that the phone number had been with Huo Guanyuan for four to five years, but the phone's call history was no more than 10 pages and a few insignificant text messages.
All the records stopped abruptly 16 years ago.
That was also the day of the lab accident.
From that day on, the owner of the phone never appeared again.
It looked like after the military handed Huo Guanyuan's belongings to his wife, Luo Xinxue, she hadn't used it either.
What kind of charm did a phone that had been silent for six years have that made someone so desperate to kill and steal it?
Gu Nianzhi couldn't eat or sleep, but still couldn't solve the puzzle.
Finally, Zhao Liangze couldn't stand it anymore and dragged her out of Huo Shaoheng's office. He shoved her into the computer chair next to his desk. "Run the program for me. There's only one more day until the trial. If we haven't found anything by then, it's very likely that the opposing lawyer has found a loophole in Huo Jialan's story and Bai Jinyi will be exonerated."
Gu Nianzhi laughed coldly. "She wants to be exonerated for Luo Xinxue's case? Did she ask me?! Also, there's still Auntie Song's case! "
※ ※ ※
This was the first night watch. Let me remind you about the monthly votes and recommendation votes!
The second night watch was still 1 pm.
I had planned to update at 2 pm yesterday, but it was already past 1 pm when I uploaded it. In my daze, I mistook "publish now" for "publish on time" …
O(∩_∩)O。
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