This is an urban emotional suspense detective novel that may seem cliché, but is actually a little bit more thrilling as you read it. Sometimes I can't help but sigh, there is still a little tenderness behind the tough man. At this time when overloaded work is involved, if you can recall the good school days, some people may be more emotional, some may feel a little regretful, and some may gain strength. And some people, such as Qi Huan, whenever he thinks back to his career in the police academy, he will sigh instinctively at the different paths between them now. Maybe this is not the ending he wants most, but this must be the most appropriate solution he can do...