Fireworks of Yesteryear (去年烟火), also known as When We Met, is a live action adaptation of the extra from the novel What Era Do You Think This Is (都什么年代了啊) by Qi Xiao Huang Shu (七小皇叔). This is a peak of the film's production; it is the behind the scenes content.
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Fireworks of Yesteryear - Behind the Scenes' Main Cast
ZH