Source: NATIONAL GEOGRAPHIC, 2/2018

Watching Jiang Wannian and Ping Cuixiang harvest a sixth of an acre of daikon seed in the north-central province of Gansu feels a little like traveling back in time.In a dry valley ringed by dusky mountains, on a brick-paved lot, Jiang drives a rusted tractor over a hip-deep mound of dried plants. As they crush down, Ping, Jiang’s wife, plunges a homemade pitchfork into the straw and arranges it for another pass. 

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