A math genius gets recruited by Chinese spy agency to crack a complex coded message in the early republican era.
Ying Er
Zhai Li
Chen Xuedong
Rong Jin Zhen
Jing Chao
Zhao Qi Rong
Zhang Zhehan
Han Bing
Yin Xiaotian
An Neng
Guo Jingfei
Zheng Dang
Wang Yanyang
Pan Sen
Ady An
Shen Yu Er
