The tone of the film is depressive, and the plot is not complicated. About 5 minutes into the opening, it can arouse nervousness. The seemingly simple case has a tendency to mislead people at the beginning, but every time the director is about to lead the audience into a misunderstanding, he twists the plot back to make the audience aware In fact, it contains more complicated things. The overall feeling of the film is a bit verbose, and some important points are also covered in one stroke, but it can make people insist on watching it. The heavy story and the thoughts that the film triggers, as well as the discussion of human nature, make people feel like a throat.
However, the focus of this film is not on the process of detecting the case, on who is guilty, or on whether the murderer has been punished, in fact, the director obviously did not put too much thought on this. The focus of the film is to describe how things have become like this step by step. On the basis of constantly revealing the cruelty of human nature, it explains a truth: fate determines character, and character ultimately determines fate. The most mysterious river is actually the heart of these characters. ()