The murderer in the movie Detective Chinatown 1 was Snow. By writing in her diary, Sino made her adoptive father think that she was being bullied by Sompa. Then, she wrote down the method to kill Sompa in her diary, enticing her adoptive father to kill Sompa. It was very likely that Sino and Dan were in a mutually beneficial relationship.
There were a few possible murderers. According to the plot of Detective Chinatown 2, the murderer could be the experimental genius surgeon James Springfield. He used the Taoist theory of Yin and Yang to kill people in New York City. The other possible murderer was Detective " Q " Song Yi. He used this case to manipulate the other detectives behind the scenes and took the opportunity to kill Lu Guofu and frame James Springfield. There was also a theory that the little girl, Snow, was the murderer who directed everything. She used her adoptive father to kill. However, there was no clear answer as to who the real murderer was. Therefore, there was no conclusive answer as to who the murderer of Detective Chinatown 2 was.
The murderer in Detective Chinatown 2 was Dr. James. He had murdered many people because of his obsession with the Chinese cultivation method. His wife was Chinese. When she passed away due to illness, James was disappointed with Western medicine and decided to treat himself through alchemy. However, despair turned him into a murderous demon. Although there were some clues and identities, it was easy to infer that he was the murderer from the victim's wounds and modus operandi. The police gradually discovered his true identity during the investigation.
In Detective Chinatown 2, the murderer was the doctor, James Springfield (Michael Pitt). He was a genius surgeon who had been influenced by his Chinese wife to learn Chinese culture. He had also used Taoism's theory of Yin and Yang to commit serial murders in New York City. His motive was to become an immortal through the alchemy ritual and cure his cancer. He used five locations as the altar, namely the Hadson River, the Zaowang Temple, the park, the sugar factory, and the hospital. The identity of the murderer gradually surfaced in the movie and was finally revealed by the police and Detective Song Yi.
The real murderer in Detective Chinatown 3 was Anna Kobayashi. She killed Su Chawei and framed others.
The murderer in Detective Chinatown 2 was the doctor, James Springfield (Michael Pitt). He was a genius surgeon who had been influenced by his Chinese wife to learn Chinese culture. He had also used Taoism's theory of Yin and Yang to commit serial murders in New York City. His motive was to become an immortal through the alchemy ritual and cure his cancer. The identity of the murderer gradually surfaced in the movie and was finally revealed by the police and Detective Song Yi.
There were some clues that could lead to a conclusion about the murderer of Detective Chinatown 2. According to the description in the second document, the police had identified Tang Ren as the murderer of Sompa through surveillance videos and fingerprints. In addition, the fourth document mentioned that the doctor was the murderer of the whole case, but Song Yi also killed Wang Xun's character. Although these clues did not provide a conclusive answer, it could be inferred that Tang Ren and Song Yi might be the murderers in Detective Chinatown 2. However, because the search results provided did not have a clear answer, it was impossible to determine the true identity of the murderer. Therefore, I don't know the exact answer to the murderer of Detective Chinatown 2.
In Detective Chinatown 2, Song Yi was not the murderer. In document 1, it was mentioned that Song Yi's photo with the customers in the bar was the alibi for the fire case, and Qin Feng was the witness for the wooden case. Therefore, regardless of whether Song Yi was left-handed or dominant, he could be ruled out as the murderer. In addition, it was also mentioned in document 4 that Qin Feng's deduction at the end of the film showed that Lu Guofu was killed by Song Yi, and the doctor was the real murderer. Therefore, based on the information provided, it could be confirmed that Song Yi was not the murderer.
Song Yi in Detective Chinatown 2 was suspected to be the murderer, but there was no clear evidence to prove that he was the real murderer. Qin Feng deduced that Song Yi was the murderer of Lu Guofu, but the others had different opinions on Song Yi. Some articles mentioned that the people in the community still believed that Song Yi was the murderer, and other detectives did not deny Song Yi's suspicion. However, there were also articles that mentioned that Song Yi might just be using this case to avenge his sister, and the real murderer might be the doctor. In summary, based on the information provided, it was impossible to determine if Song Yi was the murderer.
There was no information on the specific motive of the murderer of Detective Chinatown 2. Therefore, I don't know what the murderer of Detective Chinatown 2 is going to do.
The ending of the Detective in Chinatown did not clearly reveal who the real murderer was. It was an open ending that allowed the reader and the reader's imagination to play freely. However, according to the speculations and comments of some readers, some people believed that the real murderer might be Tang Ren because he left some clues in the final puzzle, suggesting that he was inextricably linked to the murder. There were also some people who thought that the murderer might be Qin Feng because he showed abnormal calmness and decisiveness in the final deduction process and also discovered some unknown secrets. However, these were all guesses. The real murderer still needed to be discovered and investigated.