The ticket number lit up on the wall. Rouxi saw the number and dragged Li Yun into the room where the nurse performed a quick physical and took a blood sample. After another thirty minutes, they went into an office to greet a specialist. Doctor Ming examined Li Yun while asking some questions.

"Have we met?" Doctor Ming asked.

Li Yun remembered he was the cardiologist who helped the patient named Piwei last week.

"I don't think so," Li Yun responded.

"Everything looks fine so far, what were you doing when you collapsed?" asked Doctor Ming.

"Ah, well, my girlfriend and I like to seek a bit of thrill, so we went to a haunted house," Li Yun replied. "I got scare s***** and that's how it is."

Rouxi rolled her eyes and almost looked embarrassed to be in the same room as him.

"Ah, I see," Dr. Ming chuckled off the awkward atmosphere. "The heart can't handle a lot of thrill. You're still young, so it's understandable."

After ten minutes, their time was up.

"I can't believe you told him that, I thought you would be less shameless," Rouxi said as they walked around the hospital.

"It's the truth, I don't lie to doctors."

"Really?" Rouxi held onto his hand with hers and felt the warmth. It wasn't shaking like before and the sound of his pulse was calm. She smiled and rested her head on his arm. "It's good that you're fine."

He squeezed her hand to reassure her, and they walked a little further toward the lobby area.

"Do you know why Ju De is here?" she asked.

"He's helping me look for someone. Did you meet Ju De at the same party you met Xuxu?"

"No, I didn't meet Ju De until I went to the university. Is he looking for another killer?"

"You know the property on Caoben street?"

"Ah, the doctor involved in the illegal organ harvesting? So the person works in this hospital?" Rouxi looked around. "There are a lot of doctors here, no wonder the police couldn't find anything."

"It's going to be tough to profile a doctor who's just doing this for money," said Li Yun. Anyone could kill for money. The person didn't have to be a lunatic or a psychopath to kill for money, just desperate.

"But if it's someone normal, they would at least feel a sense of guilt," said Rouxi. "Someone who looks sickly, or someone who will overcompensate."

"Or it could be the type that justified what they did, and live normally." Li Yun thought those were the worst type of people.

"Okay, I'll help you search."

"Rouxi, I am not asking you to help, and you're still a student, focus on that. Xuxu is already complaining about Ju De skipping class."

"Don't worry."

As Rouxi drove them to the hotel, Li Yun messaged Bu Tao about the couple who was murdered.

BuTao: Why are you looking into cold cases?

LiYun: Just curious, I was checking out a property, and saw something that might be useful.

BuTao: it's a case from eight years ago, so I don't know much about it either.

DaYun: Can you find any connection between Mr. Jia and a man named Yudan?

Li Yun heard the shouting from the husband numerous time that it was a name that was difficult to forget.

BuTao: okay, I'll take a look.

****

The girls at the university chatted around their table as usual. However, one of the girls saw an unusual pairing.

"Is Song Meilin with Ju De?" Li Chang commented in the university's dining hall.

Wu Ling, An Zhang Mi and Zhu Ah Nin all looked over at the other corner of the room.

Outside of his usual group of friends, Ju De doesn't communicate with anyone else. Ju De would only sit with Ersan, but that was because they knew each other from high school. If Ju De met Ersan in any other setting, they may not e considered as friends.

As for Ersan, he was an architecture student and had no social life once class started. He was either sleeping or in the studio working on a project.

So Ju De ended up sitting by himself and emitted a loner aura that made everyone avoid his table.

As for Rouxi, she was always sitting at a different table. She knew a lot of people, but she wasn't particularly close to anyone. Even though she hung out with Wu Ling during the weekends, they don't usually sit together during lunch.

Wu Ling looked at Zhu Ah Nin curiously. She knew they were dating, but their relationship was rather unusual. They rarely talked about it even though they had been living together for over a year.

"They are working on a case," Zhu Ah Nin replied.

"What case?" Li Ching wondered.

"Random cold cases."

"Really!?" An Zhang Mi sounded excited. "Why are they working on cold cases?"

Zhu Ah Nin shrugged her shoulders, she wasn't sure either. She could read Ju De's lips, but Rouxi was facing the other way.

"Why don't we join their table?" Wu Ling asked. She could tell that Zhu Ah Nin also wanted to know.

The girls approached the table, which had photos of doctors scattered across the surface of the table.

"It's not the rheumatologist, he's not thorough and lacks any sort of methodological thinking," Rouxi said as threw the photo aside.

Ju De looked at the twelve photographs still scattered on the table.

"How did you get the photographs?" Rouxi asked.

"Someone hacked the hospital system and got the photos."

"Senior Fuzheng?"

Ju De nodded and reorganized the photos. He didn't want to disclose too much information to her.

It wasn't her reputation that worried him, but it was her ability to act normal. He did not know much about Xuxu's business dealings, but if his sister's business partner was Rouxi, then her identity wasn't simple. She had also fooled Li Yun before, so Ju De was cautious of her.

Rouxi heard two people near the table and glanced to see the girls heading their way. "Ah! Perfect timing you guys! We need more people for the Detective Club."

"Detective Club?" Zhu Ah Nin eyed Ju De carefully. "Why?"

"I was just passing by when I saw a bunch of pictures," Rouxi explained. "I asked him what he was doing, and he told me about the cold cases. I then thought it would be a brilliant idea to create a Detective Club."

"She's my sister's friend," Ju De explained to his girlfriend.

"Sister Xuxu's friend?" asked Zhu Ah Nin.

After a quick introduction to everyone, they realized that Ju De was helping Li Yun on a case.

Ju De was forced to explain the case. Wu Ling felt her head exploding. She wasn't used to solving cases and had no idea why she was pulled into the situation. Somehow, by the end of the week, they worked their way to narrowing the suspects to four people.

Even Li Yun was impressed.

"Bufu narrowed down the doctors who had been in the area for ten years," Ju De explained. "We then found the four who were the most meticulous and had a cautious personality, and they are also skilled in surgery. It's likely they used organ harvesting as a way to get money and improve their skills."

"How did you manage to narrow it down to four so quickly?" asked Li Yun.

"My girlfriend, your girlfriend, your cousin, and their two other friends camped out at the hospital and chatted with everyone, with me pretending to be sick," Ju De said on the phone, sounding a bit annoyed.

"Why are you so annoyed?"

"I'm forced into this random detective club your girlfriend made up. I'm the only guy."

"Congratulations, you have a spring blossom harem."

"Spring blossoms my ass. They gossiped about the doctors and nurses like they know them personally."

A psychopath with five chatty university girls, it could be a show.

"Hey, you're not the only guy, you have two alumni sponsoring the club as well," said Li Yun.

"Are you seriously dating her just because she pulled a fast one over you?" asked Ju De.

"That's about it, does it even matter? We're just dating."

Ju De rolled his eyes, but then again, it was none of his business.

After talking to Li Yun, Ju De shared the information with Bu Tao, who started a more thorough investigation. During the investigation, they found one doctor with unusual spending habits during the past ten years, a general surgeon named Doctor Tsang.

Unfortunately, there wasn't any way to make a direct connection to the case. Being extra careful, there was no physical evidence to tie him with the case.

Li Yun arrived to Yide Hospital to search for Doctor Tsang. He had seen him once before when the man named Piwei was stabbed, and knew that he often worked in the ER.

Li Yun entered the ER in his white coat and surgical mask, and watched as Doctor Tsang checked on a patient who was rushed into the hospital after collapsing. The patient had a slightly bluish complexion.

Rouxi was partially right about the culprit. Doctor Tsang was a person who felt a sense of guilt, and overcompensated it by helping others. He was also justifying his actions, that everything he did was for the greater good. He was able to improve his surgical skills by operating on those people. Some had died, but it was their existing conditions that caused their deaths.

"A party with at least a dozen people coming in with food poisoning," someone announced on the loudspeaker.

There were more people coming in.

Li Yun was irked by how slow everyone besides Doctor Tsang was.

"Hey you! Grab the non-rebreather masks and prepare multiple ventilators for possible severe carbon monoxide poisoning!" Li Yun called out to the residents still handling non-critical cases.

The residents looked confused, but followed the command.

He quickly dialed Lao Yi Bao.

"Master Bao, how to increase oxygen intake on patients coming in with carbon monoxide poisoning?" Li Yun asked quickly on the phone.

Li Yun knew that even if they managed to save the incoming patients, they would suffer from the aftereffect. A good portion of people who had suffered from acute carbon monoxide poisoning will have other types of problems in the next ten years if not treated properly.

Hearing Li Yun's urgent tone, Lao Yi Bao didn't bother to greet him and immediately walked into the library to search for a manuscript.

"Grandpa, what's wrong?" Yi Ansha asked.

"Help me find the twelve jing needle point method."

Yi Ansha nodded and searched around. They found the document within minutes, and Lao Yi Bao explained to Li Yun the technique for every case they encountered.

"It's going to involve some proper breathing if the patient is conscious," Lao Yi Bao explained.

Li Yun inserted the first set of needles on a patient, and asked the nurse for more needles. Although the nurse had never seen him before, he wore a white coat and had an authoritative tone. She felt like she would be fired if she didn't listen and immediately went to get more acupuncture needles.

Once Li Yun got more needles, he inserted them in as many patients as possible and told the patients to breathe in deeply with their nose and then breathe out slowly from their mouth. The patients followed the instructions as they breathed in and out of the oxygen mask.

By allowing the body to receive more oxygen, it reduced the amount of carbon monoxide in the body. It was the basic treatment for carbon monoxide poisoning. However, with acupuncture treatment, hopefully it will reduce the problems the patients might encounter in the future.

"In the case of a condition of depletion and if the movement in the vessels is fine, the disease will be maintained for a long time. If the movement is massive and rough, it is a painful blockage-illness." - Ling Shu