How to see the marketing model of the movie "Later Us"?

There are many ways to spread this film. For example, the major V's in Weibo collectively voiced their support, and various marketing numbers were highly sought after, jointly creating hot spots and traffic. For example, Eason Chan, Hebe Tien, Mayday, etc. are widely favored by young people, and the theme songs of singers with their own traffic, friends who have loved for a long time, us and later us, have all been published. For example, in the later Us, some people broke the circle of friends' locks and refunded tickets, such as buying navy to brush douban score, cat's eye score, Zhihu hot list, Weibo hot search and so on. These methods cover almost all the target groups and have achieved great publicity.