Colombia's Orlando Duque performs a dive in round 1 of the men's 27m high diving during the World Swimming Championships at Moll de la Fusta in Barcelona, July 29, 2013. [Photo/Agencies]
Geng Jiasheng, 54, a national master technician in the manufacturing industry, is busy working on improvements for a new removable environmental protection toilet, a project he has been devoted to since last year.