Liang Zichen nodded and said, "Regarding the fingerprints on the doorknob and the telephone, we haven't found any further clues. First, regarding the fingerprints on the doorknob, we only collected one person's fingerprint, and then compared it with the fingerprints of the deceased, Han Lin, confirming that the fingerprint belongs to Han Lin. As for the fingerprints on the telephone, we also only collected one person's fingerprint, which I suspect could only belong to Xiao Lin. We just need to compare this fingerprint with Xiao Lin's, and we'll have an accurate result."

"The murderer is still so meticulous in his work." Wang Shen frowned and said after listening to Liang Zichen's words.

"Captain Wang, don't be discouraged. Actually, we have some other clues." Liang Zichen comforted Wang Shen when he saw his slightly disappointed look, and a smile appeared on his lips.

"Other clues?" Wang Shen turned to look at Liang Zichen, suddenly remembering something, and stared at Liang Zichen as he asked, "Oh right, there's also Zhao Zimo's file that I asked you to investigate, and the bank transfer records related to Han Lin's card."

“Yes, I think the investigation results on these two points have provided us with a lot of help, and even more clues.” Liang Zichen nodded, then put down the paper in his hand and found other papers on the table.

"Captain Wang, take a look at this first." Liang Zichen handed a file folder to Wang Shen.

Wang Shen opened the file folder and pulled out the papers inside. The first line of the first sheet of paper contained the name Zhao Ziming. This file folder contained Zhao Ziming's file. There weren't many documents, just a few sheets of paper, detailing Zhao Ziming's relevant information. Wang Shen's gaze swept over Zhao Ziming's file, seemingly finding nothing particularly noteworthy. Until the words "orphan" caught his eye. Wang Shen thought for a moment, recalling that Han Lin was also an orphan.

As Wang Shen recalled the events, he began to carefully reread Zhao Ziming's file. Suddenly, his gaze fell upon a contact address. The contact information in Zhao Ziming's file read "Caring for the Orphanage" in large characters. Wang Shen vaguely remembered these words. When he first saw them, without any specific reference, they hadn't particularly caught his attention.

Wang Shen rummaged through his drawer and, thankfully, Han Lin's file was still there. He took Han Lin's file out and found the piece of paper with Han Lin's personal information among a pile of documents. The first contact address in Han Lin's personal information section even had the words "Orphanage Care" written in large characters.

“Captain Wang, I remember you said that Han Lin has no other relatives. And this Zhao Zimo is also an orphan. Do you think there is any connection between them?” When Wang Shen was comparing the two files, Liang Zichen also discovered that there seemed to be some kind of relationship between Han Lin and Zhao Zimo.

Upon hearing Liang Zichen's words, Wang Shen looked up at Liang Zichen, nodded, and then handed the information sheets of Han Lin and Zhao Zimo to Liang Zichen.

Liang Zichen took the two files from each other, holding them in both hands. His gaze darted back and forth between the two files. "Captain Wang, are they from the same orphanage?" A moment later, Liang Zichen noticed the connection between Han Lin and Zhao Ziming, looking at Wang Shen with a slightly surprised expression.

"That's right, these two people must have known each other since they were children."

"So, they were childhood sweethearts, got together, and eventually had a child?" Liang Zichen said, offering his guess.

"That's roughly the relationship," Wang Shen nodded.

"Han Lin and Zhao Zimo are childhood sweethearts, and they even have a child together, so why didn't they get married?" Liang Zichen frowned slightly, looking at the file in his hand and then at Liang Zichen.

“There are many reasons for that,” Wang Shen shook his head. “However, the most urgent task at present is to figure out what the relationship between them is. Therefore, it is necessary for us to visit this ‘Orphanage for the Care of Children’.”

Liang Zichen nodded upon hearing Wang Shen's words. Then, Liang Zichen suddenly remembered something, snapped his fingers, and looked at Wang Shen. "Captain Wang, I've found an even more important clue here."

"Oh?" Wang Shen's attention was immediately drawn back to Liang Zichen.

Liang Zichen put down the two sheets of paper in his hand, then pulled out a few more sheets from the pile of documents in front of him and handed them to Wang Shen. Wang Shen took the papers from Liang Zichen, glanced at them, then looked up at Liang Zichen and asked, "These are Han Lin's bank card transfer records all along?"

Liang Zichen smiled and nodded, then said, "Han Lin has a total of five bank cards, of which about three are frequently used. However, through analysis of the transfer records, only one card and a specific account have a fixed and frequent transfer record. Therefore, I printed out the transfer records of this card and that specific account from the first transaction to the last transaction."

While listening to Liang Zichen's words, Wang Shen looked at the transfer records in his hand. His gaze fell on the date of the first transfer: October 21st, three years ago. Wang Shen stared at this date for a long time. Three years ago, three years ago… June 18th, three years ago, was the day Han Mo had her accident. And this transfer record was only a few months after Han Mo's accident. Could there be a connection? Wang Shen pondered this possibility. After a while, Wang Shen snapped out of his reverie and observed again the frequency of Han Lin's transfers to this specific account. The transfer frequency was basically once a month, occasionally a couple more times. Moreover, the amounts were not small; the minimum monthly transfer amount was always over five figures.

"Judging from the amount and frequency of the transfers, I guess the money transferred out each month is for the child's living expenses." Liang Zichen said, seeing that Wang Shen hadn't spoken for a long time.

At first, Wang Shen didn't respond much, only nodding slightly. After a while, Wang Shen looked at Liang Zichen and asked, "Have you checked the information of everyone in the account to which the money was transferred?"

Liang Zichen nodded and said, "We found it. The owner of that account is named Fu Ju."

"Fu Ju?" Wang Shen's eyes widened as he glanced at Liang Zichen again. After a while, Wang Shen asked, "Have you investigated this Fu Ju?"

"I've already asked the archives department to retrieve her records, but so far there's been no response." Just as Liang Zichen finished speaking, a police officer stood in Wang Shen's office and knocked twice on the door.

Wang Shen looked up at the police officer standing at the office door and said, "Please come in." Then, he saw the police officer walk towards him and place a file folder on his desk.