Manchester United's Antonio Valencia (L) celebrates with teammate Wayne Rooney a score against Bayer Leverkusen during their Champions League soccer match at Old Trafford Manchester, northern England, Sept 17, 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.