Yanjin

— Three counties in Honan along the old course of the Yellow River in an area with poor soil covering either sandy and saline-alkali land or fields liable to drought or waterlogging, waged stubborn struggles against the natural disasters of flood, salinity and alkalinity, drought, and sandstorms. In 1968 the Yenchin County Revolutionary Committee led the people in digging irrigation canals, draining waterlogged areas, leaching alkaline and saline soil, and planting trees.