Secret Army The story tells that during the Republic of China, Zhang Xiaozhi, Qianyan and Yangling were threatened by the riot warlord Li Yufei and forced to go to the Shenlong Underground Palace to solve the thousand-year secret. Details Casts Galleries Posters Title Secret Army Release Date 2021-01-08 Runtime 01 Hours 14 Minutes Genres Action Adventure Production Companies Unknown Production Countries China Peng Yu Si... Zhang Xiaozhi... He Qiwei... Qian Yan... Dian Wen... ... Jun Li... ... Xu Zhenyi... ... Kim Bai... ... Chen Yajing... Yang Ling... Original Size (1451x817) Original Size (500x750)