Farmer Jiang Changgen tests his self-built helicopter in Shangrao City, East China’s Jiangxi Province, Jan. 6, 2016. Jiang, who is in his 50s, spent nearly 200,000 yuan ($30,000) and took three years to create the small helicopter that is 2.65 meters high and 2.5 meters long with propellers 8 meters in diameter. It weighs 650 kilograms. The test flight failed but Jiang said he will continue improving the machine as a hobby. (Photo/IC)
