Travel magazine photo caption: 'The water wheels at Lanchow [Lanzhou]. Three great water wheels, constructed entirely of wood, lift the water from the Yellow River to a long conduit which carries it over the city wall of Lanchow [Lanzhou] to the fields beyond. These wheels are an interesting example of the ingenuity of Chinese craftsmanship, but unfortunately they operate only at high water seasons.'
Source of Descriptive Information
Photographic print; Travel. (May, 1934). Rafting on the Yellow River. Vol. LXIII, No. 1, p. 27-29, 49.
Forman, H. (1948). Changing China. New York: Crown Publishers