Hearing Wang Shen bring up the topic, Liang Zichen put down his wine glass and stared intently at Wang Shen. "Captain Wang, aside from yourself, I think probably none of us understand why you went to such lengths..."

Wang Shen nodded. "Zichen, I'm asking you, why did Han Lin plot to kill Acheng?"

"Why?" After hearing Wang Shen's question, Liang Zichen thought for a while before answering, "According to the recording in Acheng's email, Han Lin is because Acheng also has something on him. And this thing is that Han Lin once asked Acheng to give false testimony for him."

“That’s right.” Wang Shen nodded. “But is this false testimony worth Han Lin risking so much to kill someone?”

“Captain Wang, based on what you and I discussed, Han Lin has already provided a very good explanation for that perjury. On the night Han Mo had the incident, it was actually Han Lin who went to deliver food to Han Mo. Because he and Han Mo had a past relationship, he was afraid of getting into trouble, so he had A Cheng give false testimony.” Liang Zichen recalled what Wang Shen had told him privately and said.

"Yes, it's the same question I just raised: is it worth it for Han Lin to risk killing someone for such a reason?" Wang Shen smiled, then swirled the ice in his glass and took a sip of his drink.

After listening to Wang Shen's words, Liang Zichen picked up his wine glass again. Just as the rim of the glass was about to touch his lips, Liang Zichen suddenly put down the glass, looked at Wang Shen, and replied, "No. His reasoning is flawed. If the facts were truly as he described, our police investigation would certainly clear him of suspicion. He wouldn't have needed to murder Acheng for such a small amount of trouble."

After listening to Liang Zichen's words, Wang Shen nodded in satisfaction.

"So, there's only one explanation: Han Lin is lying. He doesn't want us to know that he went to Han Mo's house the night Han Mo had the accident. Because if we investigate him based on this clue..." Liang Zichen paused, silently organizing his thoughts as he spoke.

“If we investigate him through this lead, we might discover that he is actually connected to Han Mo’s case. However, I can’t be sure of the extent of this connection right now,” Wang Shen added, continuing Liang Zichen’s unfinished sentence.

"So, Captain Wang, what was your purpose in letting Han Lin go?" Liang Zichen stared at Wang Shen with his mouth slightly agape. Ever since Liang Zichen started working on cases with Wang Shen, he had been deeply impressed by Wang Shen's insight into the details of the cases.

"Cast a long line to catch a big fish." Wang Shen looked at Liang Zichen and smiled meaningfully.

"Captain Wang, do you mean that Han Lin is also involved with other suspects in Han Mo's case?" Liang Zichen didn't even care about drinking anymore. He put down his glass and stared at Wang Shen, seeking an answer.

Wang Shen's expression remained relaxed as he smiled and nodded at Liang Zichen again. "Do you remember the old man who collected garbage downstairs at Han Mo's house that I told you about?"

Liang Zichen nodded.

“From him, I obtained some shoes and clothes belonging to the man Han Mo threw away on the night of her accident. I currently speculate that these items belong to a man who was very close to Han Mo. I drew the outline of the shoes on a piece of white paper. Last time, when I went to Han Lin's house, I compared the size of Han Lin's shoes with the size of the shoes on the white paper. However, Han Lin is not the man who was close to Han Mo.”

Liang Zichen listened attentively to Wang Shen's analysis of the case. However, Liang Zichen suddenly interrupted Wang Shen and asked, "But, Captain Wang, does your assumption exclude Han Lin from the suspect list in Han Mo's case?"

“Actually, I can’t be completely sure either. It’s just that a voice in my head is telling me that Han Lin isn’t the culprit. Of course, such thoughts are unreliable, but sometimes those are the key to solving some tricky cases.” Halfway through his sentence, the restaurant owner brought the dishes Wang Shen had ordered to them. Wang Shen waved to Liang Zichen, indicating that he should eat something first.

Wang Shen put down his chopsticks, picked up his wine glass, and continued, "However, I checked all the communication records under Han Mo and Han Lin's names a long time ago. I didn't find that they had frequent contact. Moreover, Han Mo's case is a completely locked-room mystery. Judging from the clues we have so far, the murderer should be very familiar with the environment of Han Mo's home."

"The murderer is very familiar with Han Mo's family situation? How did you know that?" Liang Zichen asked doubtfully after putting a bite of food into his mouth.

“It’s still that bag of trash,” Wang Shen replied curtly. Hearing this, Liang Zichen scratched the back of his head and shrugged. “The garbage collector arrived at Han Mo’s building around 9 PM that day. After he got out of his car, he saw a suspicious man walk out of the building. The garbage collector also heard a bag of trash being thrown down from upstairs. The exact time of the trash being thrown and the man leaving the building is now uncertain. We can hypothesize that the murderer threw away the trash before leaving the crime scene. Why would the murderer specifically throw away a bag of trash like that?” After posing this question, Wang Shen looked at Liang Zichen, awaiting his answer.

"The murderer's actions were definitely to destroy evidence," Liang Zichen said without hesitation.

“That’s right, but not accurate enough. Think about it, if the murderer just carelessly threw this bag of trash out, wouldn’t it be possible for our police to find it the next day?” Wang Shen continued to press.

"Of course, the killer's goal was to destroy evidence of his presence at Han Mo's house. Why would he want us to find that bag of trash?" Liang Zichen paused abruptly. "Wait, wait, so the killer just happened to throw that bag of trash at the garbage disposal site? The killer timed it perfectly, knowing that the garbage collectors would come to collect it at that exact moment? That way, the killer could dispose of the trash without anyone noticing. Impressive!" Liang Zichen couldn't help but praise after analyzing the killer's actions.

“Your analysis is completely correct, but two problems arise here. First, how would the murderer know the garbage disposal time in Hanmo Community? Moreover, Hanmo's balcony is almost directly above the garbage dump, so the murderer could simply throw the garbage at the disposal site from the balcony. So, how did the murderer know the relative positions of Hanmo's balcony and the garbage disposal site?” After saying this, Wang Shen smiled, picked up his chopsticks again, and ate the food in front of him.

"So, Captain Wang, you mean the murderer must be someone who knows Han Mo's home and neighborhood very well. And based on the evidence we have so far, Han Lin is unlikely to be someone so close to Han Mo, right?" Liang Zichen stared at Wang Shen, finally understanding Wang Shen's reasoning.