The building had 23 floors. Xia ruofei's house took up the 22nd and 23rd floors.
There were two staircases and two households in each unit. Only by swiping the owner card could one reach the corresponding floor, so the privacy was quite high.
On the 22nd floor, the person in charge of the Property Management Office personally entered the facial recognition and fingerprint identification information for Xia ruofei.
This was recorded for the Security Control System of the house and was necessary for Xia ruofei to enter and leave the house in the future.