I Wish I Knew -- Film Review

CANNES -- "I Wish I Knew," Jia Zhangke's documentary on Shanghai, commissioned to commemorate the World Expo taking place in the city this month, is a patchwork quilt with too many fabrics and patterns. Dipping into the historical, human and scenic through interviews and nomadic location shooting, it reveals what most films touching on modern Chinese history address: how wars and political unrest led to suffering and Diaspora.