【描述】2017年6月14日，山东省淄博市高青县高城镇东张村村民张良钢（左）做无人机起飞前的准备。曾经是贫困户的张良钢现在已经成为一名熟练的农业无人机飞行员，年收入达5万元（约合7800美元）。
        
         Zhang Lianggang (L), a farmer of Dongzhang Village, Zibo City, Shandong Province, prepares for the flight of his drone, June 14, 2017. Zhang, who used to be a poor and needy villager, has become a skilled drone operator, earning 50,000 yuan (USD7,800) a year.