In order to determine the location, the producer visited many cities. After deciding to shoot in New Orleans, the producer brought the screenwriter Mattson Tomlin here to see how to integrate the shooting scene with the script.
The crew also rewritten some scenes in the script, such as a scene in an abandoned building, which was "reconstructed" by a local artist into an art district.
There is such a plot in the film. After a series of clues are traced, a woman who eventually becomes a victim of the super pill is pushed to the front of the stage, and a lot of fighting scenes surround her. Jost said that the shooting of these action scenes has become the "most complex task" of the film, requiring the "detailed arrangement" of lens movements. The visual effects alone took about a year to complete.
