I don't know much about the original 'Zero' story, but according to what I know, the original 'Zero' was a famous web fantasy novel written by Tian Can Tu Dou. The novel told the story of the protagonist, Ye Qingyin, who traveled back in time to become a cat girl and saved the world through constant adventures and battles. The plot of the novel was full of ups and downs, and the characters were vivid and loved by readers. In addition to the novel, there were also some related plot analysis and strategies for the readers to refer to.