1. Rashomon was originally Japanese, Rajōmon or Rashōmon. In the story of "The Story of the Past", "Rashomon" was originally called "Rachengmon". It is a gate at the southern end of the Suzaku Avenue that leads north and south from the center of Heian Kyoto, Kyoto, Japan.

2. Later used to refer to the gate between the world and hell, the difference between fact and illusion. It usually refers to: The parties involved in the incident each insist on their own version of events, and express and prove or weave lies in a way that is beneficial to themselves, which ultimately makes the truth confusing and difficult to get to the bottom of it.

3. "Rashomon" is a short story. Written by Ryunosuke Akutagawa. Published in Imperial Literature in November 1915 (Taisho 4th year). It is based on stories from the past and present, and takes the desolate capital at the end of the dynasty as the stage to describe the egoism of human beings who do evil in order to survive.