is the main protagonist of the Link Click donghua series. He has the ability to dive back into photos through clapping his hands, allowing him to possess the photographer's body in order to fulfill their client's wishes. Alongside Lu Guang, he is able to share his consciousness and directly change the events of the timeline in the photo. Cheng Xiaoshi has a thin, tall build, light skin, and a handsome face, with light brown eyes and a thin nose. He has curly, raven black hair that parts just above his left eye and curls a few inches below the nape of his neck. Cheng Xiaoshi is a playful, laidback, and childlike character who has a habit of taking things too lightly. Sporting a prominent mischievous streak, he is fond of teasing others and goofing around. Described as the less responsible and dependable one by Qiao Ling, he oftentimes gets berated and beaten up by her due to his brash attitude. Sometimes even Lu Guang gets annoyed by him, but admits that he was first drawn into him precisely because of his naivety, and how genuine he seemed to be when they initially met. Furthermore, all his recklessness aside, Cheng Xiaoshi is far from stupid. On several occasions, he displays an acute sense of shrewdness and cunning as a stark contrast to his devil-may-care attitude. His cleverness is well demonstrated in his plan to trap Liu Min, and in how he exploits his powers to escape Li Tianchen, while also managing to trick the latter into freeing Lu Guang. Not one to get frightened easily, he is more than capable of holding his own in a battle of wits, and retain his adaptability, even under extreme stress. A decidedly headstrong and impulsive individual, Cheng Xiaoshi has a tendency to be short-sighted and makes decisions with his heart rather than his head. When Cheng Xiaoshi was in second grade, he tried to imitate a hero from a cartoon and jumped down the stairs, fracturing his tailbone. This resulted in him getting a lightning-shaped scar on his butt that he was proud of, showing it off for half a year.