Jack the Ripper! A real incident in London, England, has not caught him so far! -Jack the Ripper Jack the Ripper brutally killed at least five prostitutes in Whitechapel, East London, between August 7th and October 9th. 1888. During the crime, the murderer repeatedly wrote to the relevant units to provoke, but never fell into the French Open. Its bold criminal methods were repeatedly exaggerated by the media, which caused panic in British society at that time. He is still one of the most notorious killers in European and American cultures. Jack's modus operandi was not fully understood until the 1990s, that is, 100 years after the Whitechapel serial murder. From this, we can infer many characteristics of Jack: A. He must have considerable anatomical knowledge. B, considering the environment at that time (outdoor, basically no lighting, I have to be alert to the surrounding situation at any time, extremely tense time), Jack must be a skilled knife user. C, all the victims were stabbed from right to left by a knife, which means that Jack is probably left-handed or skilled in using knives with both hands. This speculation indirectly indicates that Jack is probably an experienced doctor or anatomist. D, it's possible that Jack didn't do it alone. This inference is widely accepted by "royal conspiracy theorists", but there is no evidence that Jack has an accomplice. E, Jack must be a man with some physical strength. The last one became the main flaw of the "Royal Conspiracy Theory". William Gul, a suspect in the royal conspiracy theory, is thought to have been over 70 years old when he committed the crime. Such an old man, no matter how good his anatomical skills are, his physical strength does not allow him to carry out such a laborious murder.