Gulang County in Wuwei City,Gansu Province is located at the eastern end of the Hexi Corridor in northwest China.With mountains,plains,and deserts each accounting for one-third of its territory,it is one of 23 deeply impoverished counties in the province.The southern part of Gulang County is made up of mountains and valleys with poor transportation and a record of frequent natural disasters.Residents here mostly rely on nature for subsistence and get by on extremely meager incomes.