A Chinese director unveils the story of Shanghai at the 2010 World Expo shanghai is a city that has many stories, and Jia Zhangke, a celebrated film director, is about to tell some of them in his new film, I Wish I Knew. The documentary film is dedicated to the 2010 A Chinese director unveils the story of Shanghai at the 2010 World Expo shanghai is a city that has many stories, and Jia Zhangke, a celebrated film director, is about to tell some of them in his new film, I Wish I Knew. The documentary film is dedicated to the 2010