I Wish I Knew () is a 2010 Chinese documentary film directed by Jia Zhangke. It was screened as part of the Un Certain Regard section of the 2010 Cannes Film Festival. The film features a number of people (including film director Hou Hsiao-hsien) talking about their life experiences of Shanghai, and about China's film history. References External links 2010 films Chinese documentary films Films directed by Jia Zhangke 2010 documentary films