How to evaluate the photography technology in The Burning Sun Heart?

First of all, these two films are realistic works, and Save Mr. Wu is based on a real case. Therefore, these two works must be realistic in photography.

1. Handheld photography simulates a person's subjective perspective, and the camera moves with the actor's role, not the position. Imagine if you were involved in an event in a movie and stood by Andy Lau and looked at them, but they couldn't see you. How will your head and eyes move?

2. The scenery is messy, but the color is gloomy. It is precisely because these two films are criminal themes that the color should give the audience a sense of oppression and the scenery should pursue truth. Do you think it's realistic that the kidnappers who kidnapped Andy Lau cleaned up the house?