A doctor and a nurse had just finished administering emergency treatment to a patient on the fifth floor. They decided to take the elevator down to the first floor, but as the elevator passed the first floor, it continued descending. B1, B2, B3... until it finally came to a halt on the third underground floor. The elevator's doors opened slowly, and a chilling coldness enveloped them. A girl was standing right in front of them, seemingly about to enter the elevator.
The doctor turned pale with fear and quickly closed the elevator doors. The nurse asked the doctor why he didn't let the girl inside. The doctor, still trembling, replied, "Didn't you see the red ribbon on her wrist? The third basement floor is the hospital's morgue, and each body down there is marked with a red ribbon to identify them."
The doctor continued to gasp for breath, his fear palpable. The nurse, her hand shaking, slowly extended it in front of the doctor, asking, "Like this red ribbon?"
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