Han (Jackie Chan), comes to Dre's aid, revealing himself as a kung fu master who adeptly dispatches Dre's tormentors. During a particularly brutal beating by Cheng and his friends, the enigmatic maintenance man of Dre's building, Mr. Dre develops a crush on a young violinist, Mei Ying (Wen Wen Han), who reciprocates his attention, but Cheng (Zhenwei Wang), a kung fu prodigy whose family is close to Mei Ying's, attempts to keep them apart by beating Dre, and later harassing and humiliating him in and around school. Henson), arrive in Beijing from West Detroit to start a new life. 12-year-old Dre Parker (Jaden Smith) and his mother, Sherry (Taraji P.