Six hours after being taken into Beijing's Juyuan Hotel, Anhui girl Li Ruirui was raped. The hotel "guard" is suspected of being the attacker. At the time of the incident, more than 70 special "residents" from all over the country had been brought into the hotel, crowded into the simple houses in this gray courtyard near Beijing's South Railway Station. After receiving the alarm, the police who had previously paid multiple attentions to this hotel immediately intervened and controlled the suspects overnight. What kind of hotel is this? Why are people "guarded" here? What happened to them in the gray simple houses?