I Wish I Knew (Chinese: 海上传奇) 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.
[1] 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.
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