Russia's Svetlana Kolesnichenko and Svetlana Romashina perform in the synchronised swimming duet technical routine final during the World Swimming Championships at the Sant Jordi arena in Barcelona, July 21, 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.