In the movie, only Sompa's son disappeared, but no one knew whether he was dead or not. Anyone familiar with detective stories should have noticed that at the beginning of the film, Qin Feng's bookshelves were full of detective stories, including Keigo Higashino's Nocturnal Journey, which may imply that Dan may not be dead, but hid for some reason.
His relationship with Si Nuo is very similar to that of Kirihara Ryouji and Karasawa Yukiho in the novel. In the novel, Kirihara Ryouji finds out that his father has violated his friend Xuesui, that Liangsi killed his father, and that Xuesui's mother died unexpectedly. After that, Xuesui was adopted, and Liangsi watched all this in the dark.
These plots are strikingly similar to the movies. It can be inferred that Li Zhi's killing of pine and cypress may be a game planned by Dan He, with the aim of getting both of them rid of their abnormal fathers.
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Detective Chinatown is an action comedy film jointly produced by Wanda Film and Television Media Co., Ltd., Shanghai Chengya Film and Television Culture Media Co., Ltd., Hunan Mango Entertainment Co., Ltd. and He Yi Film Co., Ltd., directed by Chen Sicheng, starring Wang, Xiao Shenyang, Sean and others.
The film tells the story of Tang people and Qin Feng, while avoiding police pursuit, gang round-up and gang encirclement and suppression, trying to find the "lost gold", find out the "real murderer" and "clear their names" in just seven days.