Twelve-year-old Hai Wa sends a secret letter containing Japanese military information to the Eight Route Army during the anti-Japanese war.

---

Main Cast: Cai Yuanyuan, Anan Cai, Shu Shi, Jiang Rui, Baoluo Li, Fei Liu, Li Ma, Yong Li, Feng Xiao, Boxun Zhou

Director: Shi Hui

Writer: Zhang Junxian

Editor:

Cinematographer: Congzhou Luo

---

Popular Double Features