Clearly the noise inside the room turn louder after Jung Hwa's request. Most people didn't see themselves to agree with the idea. Even if currently Jung Hwa was still a suspect, Che Hara claimed to have seen him killed Chu Sunji in action. And no one would ever agree to let the criminal himself to leave the court to find the killer when they could use the chance to escape or bring an innocent and pose them as the killer.
Seoyeon was also shocked. Since they entered Jung Hwa hadn't told her anything about his plan to save himself and escape from the predicament, and because of how sudden they were brought here, she thought there should be no chance for him to think of a way to leave the court safely. But he appeared to be confident, betraying her earliest guess, thus meaning he must have an idea on who the killer was and only need to bring them to the court.
