Sloppy Joe.
A good percentage of the pollution is home grown.
Yes, the Pearl River Delta is a major source, but don't forget the exhaust spewing buses/trucks, the dirty(cheap) fuel burning ships and coal burning power stations in our own back yard.
Just as the government uses misleading and outdated pollution indicators, it is that same government who's lousy policies fail to address the home grown crap that we have to breathe in for the majority of the year.
As an aside, of course it doesn't help that many of the factories in the Pearl River Delta are owned by Hong Kong people - a fact conveniently overlooked by many.
Last edited by rick.shaw; 9th Aug 2012 at 22:24.