Quickly, within the seized boats, the police made a new discovery. On the seemingly newer and more well-crafted vessel, they found crucial clues related to Zhao Di's disappearance.

Not only did the paint sample from the collision point on the bow match the paint composition of Anna's yacht, but the composition of the woven rope inside the cabin was also consistent with the fiber composition of the shackle on Anna's yacht. Most importantly, they found traces of dog hair in the corners of the cabin, along with a strand of hair mixed in that was clearly a woman's.

These items appeared to have been brought in together, which the police took very seriously. To confirm whether the person on this boat was related to Zhao Di's falling into the water, Zhang Lin went to Zhao Di's house and asked her husband to cooperate. Using Zhao Di's old toothbrush and the hair from the wooden boat, they conducted a DNA comparison. The results proved that the hair from the wooden boat belonged to Zhao Di.

This discovery opened a new perspective. Zhang Lin repeatedly watched the video of Jia Wenjun pushing Zhao Di into the water. At one moment, he suddenly stood up, discussed his idea with his superior, and then took several colleagues to the hospital.

Jia Wenjun's mother was puzzled when she heard that the police wanted her daughter's windbreaker from when she first returned, but she still said, "I took the clothes home."

"Did you wash it?" Zhang Lin asked.

Jia's mother shook her head, "I haven't had time yet."

She had intended to wash it as soon as she got home, but too many unexpected things happened, and she forgot about it. The clothes had been stuffed in her daughter's washing machine ever since.

Zhang Lin asked Jia's mother to take them back to retrieve the clothes. Upon receiving them, he immediately checked the Velcro area on the cuffs. As expected, he found several strands of hair.

He had a feeling that this would be very important, a piece of evidence that could seal the case.

Zhang Lin took the windbreaker and Jia Wenjun's toothbrush back for testing.

As they walked out of the小区 (xiǎo qū, residential complex) entrance, they ran into Bai Ma Shan, who was returning from outside the complex.

Zhang Lin had interrogated Bai Ma Shan before, so Bai Ma Shan recognized him. Seeing Jia's mother with Zhang Lin and the others, Bai Ma Shan didn't go over to greet them, but nodded to them and left.

Zhang Lin thought of what Wu Peng had said about Bai Ma Shan being able to drive a boat, and couldn't help but glance at his departing figure again.

Bai Ma Shan didn't go straight home, but turned towards the complex's fitness area.

On the walking path, he ran into Teacher Lin, who was taking out the trash.

"Teacher Lin, what's wrong?" Bai Ma Shan was surprised to see Teacher Lin looking so haggard, with her hair suddenly turning gray.

Seeing that it was Bai Ma Shan, Teacher Lin felt a bit uncomfortable. "Director Bai, you're here to exercise?"

"Yeah, I come over for a walk when I have time. My child is still young, so I need to exercise more so I can take care of him more. Otherwise, even if I want to, I won't be able to."

These words struck a chord with Teacher Lin. She threw out the trash and walked with Bai Ma Shan, saying, "Tell me about it. This child is really too worrying. Even when they grow up, they don't make things easy. My son..."

She suddenly stopped there.

Family scandals shouldn't be aired out, especially the scandals of her most prized son. But she had been feeling stifled at home for a while, and really wanted someone to talk to about her frustrations.

Bai Ma Shan saw her hesitate and knew she didn't want to say it, so he changed the subject. "By the way, Teacher Lin, the police came to me the other day and asked if I felt any impact from another boat on the first night of the cruise. I said no. I was drunk and unconscious at the time, so how would I know? Besides, I didn't hear anyone else on the boat say that another boat had collided with us. Why would the police suddenly have this idea?"

Lin looked around before lowering her voice and saying, "I was the one who told the police about it."

Having gone through life and death together, and with Bai Ma Shan's good reputation, Teacher Lin had a natural sense of trust in him.

Bai Ma Shan looked surprised. "So you felt the impact, or saw the boat?"

Teacher Lin shook her head. "I didn't see it, but I felt it."

"You felt the impact, but didn't go out to check the situation?" Bai Ma Shan asked.

Teacher Lin smiled bitterly. "I was also weak and couldn't get up, but I'm sure that a boat hit us. The police should be investigating that boat now. I don't know if they've found it or not."

"Besides feeling the vibration, did you see anything else unusual?"

Teacher Lin shook her head. "Nothing else." She paused and looked at Bai Ma Shan. "Why are you so concerned about this?"

Bai Ma Shan smiled. "I was on the boat at the time. If those people wanted to silence us, we probably wouldn't have made it back. Now that I've escaped death, I just want to ask about the situation at the time."

Teacher Lin understood what he said and said, "That's all I know. Whether others know or know but are too lazy to get involved and pretend they don't know, who knows."

Bai Ma Shan nodded thoughtfully. "That's true."

Teacher Lin suddenly asked, "How's Old Man Wang doing? Have you seen him recently? I saw his grandson before, the lawyer. He's a nice young man. He's Jia Wenjun's defense lawyer now."

Bai Ma Shan "oh"ed. "The old man is recovering well. I went to see him once before. He should be discharged soon. I'm going to the hospital to get some medicine later and go see him again."

Teacher Lin pointed to the building next to the fitness area. "I'm going back now. I'm stewing something at home."

"Oh, you should go back quickly."

Seeing Teacher Lin enter the building, Bai Ma Shan turned around and didn't go towards his own building, but went to Lü Mao Wang's water store.

Although Lü Mao Wang hadn't been detained, he was restricted from leaving the area for stealing Zhao Di's underwear, and because Zhao Di's case was still ongoing. He was also required to be available at any time.

Seeing Bai Ma Shan, Lü Mao Wang's eyes lit up. "Old Bai, why are you here?"

Bai Ma Shan smiled and said, "I want to order more water from you. The weather is getting hotter, so I need to send two more桶 (tǒng, containers) to the store and home."

"No problem. You can just call me for these small things in the future. You don't have to make a special trip." Lü Mao Wang's injuries had just healed. He had recently hired a water delivery worker and was running the store himself.

Bai Ma Shan took out two palm-sized bottles of baijiu (Chinese liquor) from his pocket. "A friend gave them to me, but I don't really drink this. Good wine should be enjoyed by someone who knows how to appreciate it, so it's not wasted. I know you like to drink this, so I specially brought it for you."

Lü Mao Wang's eyes went green. This was top-quality liquor! He quickly took it, thanking Bai Ma Shan profusely and urging him to sit down.

The two chatted for a while, and Lü Mao Wang couldn't help but start drinking.

The topic turned to the yacht. Bai Ma Shan mentioned that he had run into Teacher Lin, and that Teacher Lin had mentioned the boat being hit.

Lü Mao Wang slurred, "Let me tell you, Teacher Lin is right!"

Bai Ma Shan looked at him. "You heard it too?"

Lü Mao Wang waved his hand, reeking of alcohol. "I didn't hear it, I saw it."