Zhang Shengwu shows the inside structure of his homemade submarine on a river in Hanshan County, East China’s Anhui Province, April 27, 2016. Zhang, 51, worked in many diverse jobs, including being a vegetable seller and a carpenter, until he settled down in 2006 to build a wharf and trade construction materials. In 2014, he made a submarine by hand that was six meters long, 60 meters wide and up to 1.5 meters high at a cost of 5,000 yuan ($770). Powered by a motor usually used for tricycles and four 12-volt batteries, the machine can dive about one meter under water. A national patent for the creation was won in February 2016. (Photo/IC)
