4. I've been doing a lot of China travel scouting for suppliers and a colleague sent me www.echinacities.com . Now pay attention because these people have put together something smart. They cover 41 cities across China and for each there’s an excellent business data set (economic thumbnail sketch, basic stats, key industries etc). But also, all your travel information is there as well under a separate tab – hotels, restaurants, attractions. A really useful site.