Question: Who was the director of the 2010 Hong Kong biographical martial arts film in which Ashton Chen played the role of a martial arts student?
Sentence (from "Ip Man (film series)"): Donnie Yen has mentioned each film has a unique theme, that the first "Ip Man" film was about "Survival", "Ip Man 2" focuses on "Making a Living and Adaptation", while "Ip Man 3" focuses on "Life" itself.
Relevant evidence: No