Han Yuzi, 63, inventor, holds up one of his creations, a hair comb that doubles as a small hand-held musical instrument, in Guangzhou, the capital of China's Guangdong province, September 13, 2003. REUTERS/China Photo
Li Jingchun (top L), a 58-year-old farmer, works with his family members on his self-made aircraft on top of his house in Xiahe village located in Shenyang, Liaoning province, China, February 28, 2012. The 5m long, 1.5m wide plane, mostly made of recycled iron plates, cost the aircraft enthusiast and his family two years and more than 40,000 yuan ($6,349), according to local media.
REUTERS/Sheng Li
Gao Hanjie installs the rotor blades on his homemade helicopter in Shenyang, Liaoning province, China, June 9, 2010. The graphic designer and helicopter enthusiast, with help from his friends, has spent more than a month building the 6-meter-long and 350kg helicopter. Gao claims he will eventually fly the contraption as a personal project according to local media. REUTERS/Sheng Li
Zhang Wuyi looks up as he squats under a suction pipe of his new submarine that captures sea cucumbers at his workshop in Wuhan, Hubei province, March 25, 2013. Zhang, a 38-year-old local farmer who is interested in scientific inventions, has independently made eight miniature submarines with several fellow engineers, one of which was sold to a businessman in Dalian at a price of 100,000 yuan ($15,855) in 2011. The submarines, mainly designed for harvesting aquatic products, such as sea cucumber, have a diving depth of 20-30 metres (66-98 feet), and can travel for 10 hours, local media reported. REUTERS/Stringer
