The martial arts action movie "Blades of the Guardians" has grossed over 1.3 billion yuan ($188.5 million) at the box office since its release. Across North America and Malaysia, audiences are embracing the film with equal enthusiasm, sparking renewed interest in the wuxia, or martial arts chivalry. CGTN's Yu Hanyi sat down with legendary martial arts choreographer and director Yuen Woo Ping for a look inside the epic, and how he shapes stories one sword stroke at a time.