Yu Sin in Chang Shuxin's " Yu Sin " series was a very interesting character. His image had a certain complexity and contradiction, while at the same time, it was full of human nature and growth. From a criminal's point of view, Yu Sin was a relatively successful criminal. He had excellent skills and techniques to survive and escape in dangerous situations. However, he also had a kind and human side that gradually grew and changed in his interactions with other characters. Yu Sin's image also had a certain symbolic meaning. He often faced the dilemma of losing his freedom, being monitored and being forced to remain silent, which symbolized the people who were bound and controlled in real life. At the same time, Yu Sin's wit and flexibility also represented a way to deal with difficult situations, that is, to change his fate through continuous learning and growth. In general, the image of Yu Sin in Chang Shuxin's " Yu Sin " series was a very interesting and representative character. His image not only reflects the changes of human nature and growth, but also provides readers with a reflection and reflection on the difficulties and challenges in real life.