北京乐开花影业有限公司

In 1900s San Francisco, a white woman is murdered in Chinatown and the suspect is a Chinese man. The murder causes a social shock and the public calls for Chinatown to be outlawed. Chinese medicine practitioner Qin Fu and Chinese man Ah Gui are involved in the case, and they race against time to find the murderer amidst a battle of wits and courage.

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.