In the 1940s, the world was in turmoil, and it was crucial to decipher the enemy's communication codes in a timely and accurate manner. Rong Jinzhen has shown amazing mathematical talent since her childhood, and because she solved the problems assigned by her math teacher, she was noticed by more people, and even walked into the door of code-breaking by mistake.

Liu Haoran
as 容金珍

John Cusack
as 希伊斯

Chen Daoming
as 郑某

Daniel Wu
as 小黎黎(容小来)

Yu Feihong
as 叶筱凝(容太太)

Chen Sicheng
as 我

Ren Luyao
as 翟莉(小梅)

Chen Yusi
as 容必瑜

Yutian Wang
as 瓦西里

Zhou You
as 严实
CinemaSerf
There are quite a few similarities with "The Man Who Knew Infinity" (2015) in this film about the prodigious mathematical genius of Rong Jinzhen. By pure fluke, his problem-solving skills are spotted by teacher (Daniel Wu) who adopts the orphaned, rather subdued, boy into his close-knit family and p...