Hypnosis

She sat on the sofa with both hands on her legs and blinked up at Professor Lan with her clear eyes. She didn't respond to Professor Lan's question and it seemed as though she didn't have an answer to that question either.

Professor Lan gave her a pat on the shoulder and tried to pull He Xiyan out from her reverie. 

He Xiyan's shoulders shook but she shook her head. 

"I don't know, doctor. I'm afraid of everything you just mentioned because I've been through it myself," she said. 

"What terrifies you the most?" Professor Lan asked. 

"I don't know," she replied. 

Professor Lan acknowledged her response. She stood up, walked over to her desk and picked something up on the desk. It looked like a watch and this watch was connected to a string.