" I Know Your Secret " was a web novel. Its plot and character setting had received the attention and criticism of netizens. Some netizens thought that the plot of the drama was too melodramatic and that the relationship between the characters and the development of their personalities were unreasonable and illogical. In addition, the special effects and picture quality of the show were also controversial. Some netizens thought that it was too crude and cheap. Overall, the reason why " I Know Your Secret " was criticized by netizens was mainly because its plot and character setting were not attractive enough, and the production quality was not satisfactory. However, the audience of the drama was mainly young readers, so they might have higher requirements for the plot and character setting.