On July 23, 2018, a set of posters were exposed in the film
.
On January 20, 2019, the film released a set of new stills
; on January 21, the film was released in advance
; on May 9, the film was announced on June 27, 2019
; on May 17 , the film was released Released the looking up poster
; on May 22, the film official announced the role poster
; on May 23, the film released the "Chen Nian" version of the trailer
; May 27, the film released the role poster
; May 28, the film The trailer for "Xiaobei" was released
; on June 13, the film released the theme song MV
; on June 22, the film released a crew special to reveal "the young man behind the teenager"
; on October 22, the film was announced for 2019. It was released on
October 25; on October 25, the film premiered in Beijing
. On May 11, 2021, a Japanese version of the trailer will be exposed
.
