The quake, measuring 8.0 on the Richter scale, occurred at 14:28 on May 12, 2008 in Southwest China's Sichuan province, leaving more than 80,000 people dead or missing.
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.