"After confirming there was something wrong with the umbrella, I perked up and began to examine the other items in the hallway more closely, focusing primarily on that old shoe cabinet."

"The shoe cabinet wasn't locked, so it was easy to open. It had four shelves, all filled with old shoes, leather shoes, cloth shoes, everything. What was strange was the bottom shelf; it only had one pair of shoes." Tang Qisheng paused. "A pair of women's high heels, red high heels."

This immediately triggered Jiang Cheng's memory. In the story Yao Shunyu had recounted, the child who left the note mentioned red high heels. The child's father was taken away at night by a nurse wearing red high heels, but the hospital's doctors said there were no nurses who wore red high heels, as it wasn't allowed.

Mentioning the red high heels, Tang Qisheng's voice lowered a bit. "These red high heels are special, not just because of the color and style. They're very new, newer than all the other shoes, and there's no dust on them, as if… as if they were just taken off and put there."

"But that's impossible, because the shoe cabinet is old, clearly abandoned for a long time. Even the handle is covered in dust."

"I didn't move the high heels. I'm a little scared." Tang Qisheng's fear was palpable over the phone.

"But I remembered the shoes, and the umbrella. I first checked these things around 3 PM, and then my free time was up. When I got back, I told Zhu Jie about it and warned her to be careful."

"But in the evening, when it was Zhu Jie's turn for free time, I suddenly got a call from her. She sounded very nervous. She told me that the red high heels in the shoe cabinet had been moved. Originally, the toes of the high heels were pointing straight in, but now they were pointing diagonally outward, and the toes were aimed directly at our ward door!"

Jiang Cheng had experienced something similar, and the memory was still fresh. Back then, the ghost disguised as Fatty used shoes to monitor him.

There's a saying that if shoes are pointed at the bed at night, those dirty things will step on the shoes and climb onto the bed. In folk tales, pointing shoes at the door is said to invite ghosts in.

"Someone's trying to harm you," Jiang Cheng frowned. He was beginning to understand Tang Qisheng's thinking.

"Isn't that right? I was stunned at the time. I thought I hadn't even been here for a day, hadn't even met everyone properly, so how could I have offended someone so badly that they'd try to kill me?" Tang Qisheng said angrily. "Luckily, I reacted quickly. I immediately realized that this person had also seen the Feng Shui arrangement in this corridor. That pair of red high heels was just a medium; the real focus was on that umbrella."

"Oh, right, I forgot to tell you, that umbrella is very mysterious. I only discovered it later. The rope used to tie the umbrella is dark red, and the inside of the umbrella is also red, while the outside is black. The inside of the umbrella is lined with red oiled paper. It's a paper umbrella."

"This paper umbrella is used to collect evil spirits at the final stage of a ritual. I'd only heard of it before; I never thought I'd have the chance to see this evil thing in person."

"I roughly guessed what that person was going to do. They wanted to take advantage of the heavy yin energy at night, open the paper umbrella, release the evil thing trapped inside, and then have that thing step on the high heels and enter our room to kill us."

"But this plan has to follow a specific step, which is to open the umbrella first, and before opening the umbrella, they can't be contaminated by the aura of the high heels, otherwise they'll bring trouble upon themselves. In other words, before opening the umbrella, this person absolutely wouldn't dare approach the shoe cabinet; they wouldn't have time to check it."

Saying this, Tang Qisheng let out a sinister laugh. "So I set a trap for her too. I had Zhu Jie secretly change the direction of the toes of the red high heels, pointing them at the umbrella in the umbrella stand."

Hearing this, Jiang Cheng nodded. He understood now, and the woman's subsequent death was logical. Tang Qisheng continued, "The result was exactly as I expected. I didn't sleep all night. Around 1 AM, I suddenly heard a woman's scream outside. It was the person who set the trap!"

"The moment she opened the umbrella, the evil thing inside stepped onto the high heels, but she never expected that the toes were pointing in her direction. So, the next second, she was killed by that thing."

"Zhu Jie and I both heard a series of very hurried high-heeled footsteps, continuing to the end of the corridor, which is where the umbrella stand was, and then the screams stopped abruptly."

"At the same time as being attacked, she also violated another taboo in this hospital: no loud noises at night. So, the next day, the doctor said she was taken away for solitary confinement."

Although Tang Qisheng made it sound simple, Jiang Cheng could fully sense the danger involved. Putting himself in their shoes, if it were him and Fatty, it was hard to say whose corpse would be in the glass jar the next morning.

"Well done," Jiang Cheng sincerely praised.

"It's nothing. After all, the Night Watcher is our common enemy." Tang Qisheng breathed a long sigh, sounding somewhat relieved. "By the way, how's it going on your end? Have you found any trace of the Night Watcher?"

After Jiang Cheng told Tang Qisheng about his situation, as well as Yao Shunyu and Li Bai's, Tang Qisheng realized how serious the problem was. "You're saying that not only has a Night Watcher really infiltrated, but there's more than one?"

"That's likely the case. Based on the current situation, there should be two of them, two in each group," Jiang Cheng emphasized. "What we need to do is find these two guys before the mission ends, and kill them. Of course, we also need to solve the main mission."

Jiang Cheng had a good memory. He told Tang Qisheng the information on the note, some of which coincided with Tang Qisheng's experience. "The female nurse wearing red high heels..." Imagining this scene, Tang Qisheng couldn't help but feel a chill.

"What floor are you on now? Do you know?" Jiang Cheng asked.

"We're on the 3rd floor now. It's strange, before we went to sleep yesterday, we were still on the 4th floor, but when we woke up, we were moved to the 3rd floor, and everyone was the same. No one remembers what happened."

"By the way, this building should only have 4 floors. I observed it yesterday. There's no way to get to a higher floor," Tang Qisheng explained in a low voice.

According to the information left on the child's note, his family of three also woke up one morning and found themselves in this strange hospital, and on the first night staying in this hospital, the child's father disappeared, taken away by a nurse wearing red high heels, very similar to Tang Qisheng and the others' experience last night.