Song Mingtang (female, 26 years old): The chief prosecutor of the Criminal Division of the Southern Song Dynasty. He studied under Song Ci. He was silenced because of his investigation of a bizarre murder case. He accidentally traveled to modern times and was picked up by modern forensic doctor Lin Zhao. She pretended to be her "country cousin" and entered the Criminal Investigation Brigade of the Municipal Public Security Bureau as a temporary cleaner.
Because he helped solve an "impossible crime" case, he was hired as a technical consultant under special circumstances.
