Zhang Runfu remotely controls a four-wheeled truck with harvested oranges on a track zigzagging along the terrain of the hillside in an orchard in Santuo Village of Fengjie County, southwest China's Chongqing, March 31, 2021. Thanks to the unique climate and geographical environment, Fengjie is known for high-quality navel oranges. However, the transportation of the oranges has always been a big problem as the county is tucked away in the hills. To solve the problem, Zhang Runfu, an entrepreneur who had been working in Guangdong Province for over 20 years returned to his hometown Fengjie and invented a dual-use transporter which can be driven both on the road and track. Relying on double tracks, the transporter can adapt to hillside terrain and load heavy things. It can also be remotely controlled. (Xinhua/Wang Quanchao)