File:Backyard furnace.jpgDescriptionBackyard furnace.jpg English: During 1958-1960 Great Leap Forward era, Chinese were using backyard furnaces to produce steel, instead, useless
File:Xinyang backyard furnaces.jpgDescriptionXinyang backyard furnaces.jpg English: Backyard furnaces in Xinyang county, Henan, during the Great Leap Forward era. Date 1959 Source http://www
File:Backyard furnace4.jpgDescriptionBackyard furnace4.jpg English: Backyard furnace to produce steel during the Great Leap Forward era. Date 1958 Source http://caiquansheng1958
File:Backyard furnace2.jpgDescriptionBackyard furnace2.jpg English: During 1958-1960 Great Leap Forward era, Chinese were using backyard furnaces to produce steel, instead, useless