Open this photo in gallery: In making his new film Caught by the Tides, Chinese filmmaker Jia Zhangke used two decades of material to reflect on the political, economic and technological transformations in China over that period.X STREAM PICTURES Jia Zhangke has earned his reputation as the most important Chinese filmmaker of this century by unblinkingly chronicling the sweeping changes in his country’s society. He’s depicted its economic upheavals, rapid urbanization and increased globalization – always through the bumpy psychological journeys of characters played by his muse (and wife), Zhao Tao. In Caught by the Tides, which opens in select…