" Person's Certificate " in the fifth issue of the 2005 issue of " Small Fictions Magazine: Wonderful Stories " was a classic online novel story. It told the story of a person who was wrongly imprisoned and finally obtained freedom by proving his innocence. The protagonist of the story was accused of murder and sentenced to prison. However, his real murderer had never been discovered. In prison, he met a mysterious lawyer who provided him with a mysterious method to prove his innocence. The protagonist followed the lawyer's instructions and began his journey to prove himself. He finally found the real murderer through investigation and questioning witnesses, and successfully obtained his freedom. This story involved a lot of psychology, logic, and other aspects of knowledge, such as how to prove a person's innocence through evidence, and the psychological state of a person. At the same time, this story also shows the protagonist's courage and perseverance. He constantly overcame difficulties in the process of proving his innocence and finally succeeded in obtaining freedom.