After the anesthetic wore off, Han Chu woke up around 5 or 6 pm. The reason that they could not confirm the exact time was because even though the room was furnished with everyday needs, there were no electronic or mechanical devices.
When Han Chu was still unconscious, Ye Shuang had looked around. Even the air hatch in the toilet to circulate the air was sealed up. On the other end of the hatch, the opening was bolted shut with thick, metallic rods. Even though Ye Shuang could have easily snapped these things off, with the size of the air hatch, it would be hard for her to escape, much less when they had an injured member.
Therefore, Ye Shuang had decided to stay as a hostage.
