This film won the Best Screenplay Oscar Award in 1974. This film is a story about big conspiracy and little people's struggle. The script is very wonderful, and the characters are full of three-dimensionality. The story of this film is not fabricated out of thin air. It originated from a real incident of rape in Evans Valley in Los Angeles, USA in the early 20th century. At that time, Los Angeles had bad feng shui and chose a place lacking fresh water to build the city, so it was dry all year round. , some politicians have discovered a way to make money here and carried out a conspiracy
The main character of the story is a private detective who is involved in a conspiracy about the fate of the city by a coincidence . He wanted to uphold justice by himself, but in the end he lost everything. Not only did he fail to seek justice for himself, but he also lost his lover. At the end of the movie, the scene where the hero lost his lover in Chinatown made the People are very worried. This originally happy ending has been changed to a miserable ending.