With a click, the door opened, and a musty smell hit my nose.

I coughed and opened the window. The cool air rushing in made me feel a little better.

At this moment, the small card in my hand caught my attention.

1. Guests staying at this hotel must comply with the following rules, otherwise they will be permanently left behind.

2. Guests staying at this hotel must stay for a minimum of three days before they can leave.

3. Guests staying at this hotel must be in bed and asleep by 12 o'clock, otherwise they will be punished.

4. Guests staying at this hotel can have meals in the restaurant at designated times. The restaurant is occasionally safe, so choose your communication partners carefully. They might save your life.

5. Guests staying at this hotel are not allowed to discuss any information about the basement, otherwise they will be permanently left behind.

6. Guests staying at this hotel can search for vacant rooms. Perhaps you will make an astonishing discovery.

7. Guests staying at this hotel must participate in the party after dinner each day. You need to prepare a performance that can impress one-third of the audience. Failure will result in punishment.

8. Guests staying at this hotel need to be cautious of guests from 2015, 2016, 2017, and 2018, as they will bring unknown dangers.

2015?

I quickly took the room key. I'm staying in room 2015!

How did I become a dangerous person?

9. Guests staying at this hotel, please strive to survive until the end. There awaits a super surprise grand prize for you!

The grand prize does sound a bit tempting, quite intriguing.

Unfortunately, I'm meeting my girlfriend tomorrow morning and don't have time to play games here.

I raised my hand and checked the time on my watch. It was almost midnight, 12 o'clock.

According to the rules, I should lie down now, but how can I sleep when I've already slept the whole day?

So, at midnight, I walked into the bathroom.

The bathroom was simple, with only a plain plastic curtain for privacy.

A full-length mirror stood on the side, allowing the bather to see themselves clearly.

Fortunately, I have a good figure. I look slim when dressed and have some flesh when undressed.

I struck a few bodybuilding poses but noticed that my reflection in the mirror had a gloomy expression, somewhat sullen.

I approached the mirror with a puzzled look and made a grimacing gesture, but there was nothing strange about my reflection.

Perhaps I was just seeing things earlier!