In the category of things better seen than described is this post on Google Maps Mania with really good, high-tech, maps of China, and of Shanghai (including the subway), in particular.
We will be discussing the practical aspects of Chinese law and how it impacts business there. We will be telling you what works and what does not and what you as a businessperson can do to use the law to your advantage. Our aim is to assist businesses already in China or planning to go into China, not to break new ground in legal theory or policy. More
"...the widely respected China Law Blog"