黄渤

Dawang

荣梓杉

Xiaotian

陈思诚

Mozart (voice)

黄杨钿甜

Ding Jieling

姚晨

Niu Yuxia

范偉

Grandpa Xiaotian

贾冰

Teacher Deng

许君聪

Scarface

梅婷

Ren Xiaotian's mother