Pan Zihao didn't even have to file a complaint before the authorities approached on their own. Since the staff in the third building was limited, the current guards would have to make do with the situation. So if there was a moment of emergency like today, the staff would be forced to overwork.
Of course, they would surely receive money for their duty. Since today the prisoners weren't allowed to step out of their prisons, the guards would have to work together to bring the food items to every door.
That's why several people needed to hand over the plates in every cell.
This building was unique. Every cell was small and contained only one prisoner, unlike others. It was made like this to stop the cellmates from killing one another.
But such a position also made it lonely for the prisoners.