A half-hour passed. Grandpa Sang came out.
"Maybe I know, does your daughter have some allergy to something?" Grandpa Sang posed the question to Mu Li Zei and Su Yu Qing.
"As far as I know, she doesn't have any kind of allergy to something." Su Yu Qing answered.
"What has happened to my daughter, Doctor Sang?" Mu Li Zei asked.
"Actually, we still don't know what the cause is? You said she scratches herself right?" Grandpa Sang frowned.
"Yeah. She has scratched herself until it has started bleeding." Su Yu Qing said.
"Well, your daughter will need to stay at the hospital since we still don't know the cause. It would be some help to know the cause if we know where did she go last night. And we have still tied her hands in case she wakes up and start to scratch herself." Grandpa Sang told the situation.
