I was at the dam several times 2002 - 2006 and remember many foreign engineers that were helping the Chinese warning about the substandard concrete they were using and how they were using it. People were taking bets then that the dam will break within 20 years. Dam braking would definitely keep the Chinese bussy and Hong Kong and Taiwan could go for independence. The next 20 - 30 years will be really bad years for China, according to Feng Shui