C44 Who are the prisoners

"Nian Nian said that those people took advantage of Nian Nian's absence to look for trouble with the aunt mei. He said that they were afraid of the police, and fighting in the hospital did not mean that they would have to avoid all those coincidences. They clearly knew that Nian Nian had the rights to call for the cameras, so they did not dare to make a move in the People's Hospital