The narrator tells us that two days ago, he went to a class reunion where he heard a story from his classmate yan. yan is now working as a live stream host. She's pretty and vivacious, and she's just started doing live streams. One day, yan shows the narrator around her hotel room, and all of a sudden, some random comments start popping up on the hotel's bullet-glass screen, saying that there's someone in her room. . The narrator doesn't believe it, but he's shocked. He asks yan to admit that she actually did hide a man in her bedroom, but she won't admit it. The night passes, and yan wakes up in the morning to find her cell phone buzzing with a message from someone. It's yan's room from the night before, and it's the same room she was showing to her audience last night.