Sang Ning originally didn't want to design martial arts moves for the three girls in the dorm; they only had a morning for rehearsal.
It's unrealistic to get the moves right in just half a day, but this was the result of Huang Chengzi's strong insistence with others echoing her.
Huang Chengzi's idea was that since they were shooting a martial arts film, even if it was for a personal image trailer, it should fit the theme of the movie, ideally showcasing female strength.
Knowing Sang Ning is a professional in martial arts, Huang Chengzi wanted to get all the help she could, even if it was just an ordinary shot put throw, she wanted to do it stylishly and neatly.
How to stylishly throw a shot put was an easy problem to solve.
The most challenging part for Sang Ning was that even the process of Sun Bangyu playing a seed bursting from the earth required some martial arts elements.
How to design this? To crawl out slowly in a dark and twisted way?