1. In order to make Ke Youlun's performance more perfect, the director specially asked the teacher to train Ke Youlun in body movements. In terms of accent, an assistant director specially instructed him to teach him the local people's speech and the pronunciation of common life expressions, so that he spoke slowly and even adjusted his pronunciation word by word. In addition to the "accent training" and "action adjustment" that make Ke Youlun feel tired, he should be familiar with the script and conduct dance training.

2. In order to shoot this film, Ke Youlun refused several invitations to perform and play and moved to Shanghai.

3. From the very beginning, the film filmed a fierce racing scene in Lujiazui Financial District, the most prosperous venue in Shanghai, using aerial photography.

4. When the Grand Theatre premiered, the crew rented Wuxi Grand Theatre, one of the top ten theaters in the world, and used a group performance of 1600 people.

In order to let the audience feel the spirit of "novice" from both audio and video, the film producer paid millions of dollars to buy the copyright of the song "Cold Light".