The Chinese metropolis of Lanzhou lies along the Yellow River. Over a four-year period, the director Yuan Zheng follows the traces that could have been left by the works on the river, undertaken in the 1950s.
1967
1973
2006
2005
2017
2015
2019
1972
1989
2023
1983
1970
1993
1937
2008
1969
1949
1954
1999