When this project was first revealed by media in 2018, Herman Yau was said working as the director of this film. But in all the later promotion materials, including posters and trailers, only credited it's a Stephen Chow's film. When the film finally released, we found that in the end credits, both Stephen Chow and Herman Yau were credited as directors of this film.
Theme music from previous Stephen Chow films can be heard throughout the movie notably from the original "King of Comedy", and also "Kung Fu Hustle".
The film's theme song is a Mandarin remake of the Danny Chan song "Blast."