A biographical drama covering roughly the first 18 years in the life of Lang Lang, the world-renowned Chinese classical pianist.
| Actor | Role |
|---|---|
 Jiang WenLang Guoren | Lang Guoren |
 Ma LiZhou Xiulan | Zhou Xiulan |
 Zhang ChenghaoChildhood Lang Lang | Childhood Lang Lang |
 Yu HeweiLao Cui | Lao Cui |
 He SaifeiOu Ya | Ou Ya |
 Ding ZhichengOld Policeman | Old Policeman |
 Wang LongshuoYoung Lang Lang | Young Lang Lang |
 Xin ZhileiTeacher Lin | Teacher Lin |
 Lei JiayinSecond Uncle | Second Uncle |
 Ge YouWang Ziyue | Wang Ziyue |
 Wang ChuanjunChu Zhongtian | Chu Zhongtian |
 Hu GeMr. Hu | Mr. Hu |
| LLu YiTeenager Lang Lang | Teenager Lang Lang |
 Donnie YenAlex Yang | Alex Yang |
 Mark Lee Ping-BingZhuge Bole | Zhuge Bole |
| LLi ZiweiDirector | Director |
 Jonathan Kos-ReadHolmes | Holmes |
 Gina Alice RedlingerGina's Mother | Gina's Mother |
 Jiang MahuStudent | Student |
| JJiang SanyiStudent | Student |
| SSun YunNot listed | Not listed |
 AJ DonnellyArenberg | Arenberg |
| Yu HeweiCui | Cui |
 Yu AileiJian Sun | Jian Sun |