The story takes place in 1941 in China, where Lan Zhibing (played by Wu Qilong) and Zeng Jieru (played by Liu Sitong) are famous mathematicians. They study and live in Europe with their son Lan Tian. By chance, the couple managed to decipher the Japanese army's telegraph code. With this important intelligence, the family of three decided to take action
The story takes place in 1941 in China, where Lan Zhibing (played by Wu Qilong) and Zeng Jieru (played by Liu Sitong) are famous mathematicians. They study and live in Europe with their son Lan Tian. By chance, the couple managed to decipher the Japanese army's telegraph code. With this important intelligence, the family of three decided to take action