The White Little Crystal

I have bought a magazine recently called Chinese National Geography (not related to the National geographic). The topic of this issue is Salt. The reports are really comprehensive which cover many aspects of that, from the history of production of salt in China to the health subjects of salt intake. Just a simple thing would have a huge story behind. An Idea arise in my mind: how about making a trip about salt? In China, there is a long coastal line which provides a good environment of producing sea salt. Many cities have a long history of this business and being famous of this. Not only the coastal cities, there are some inland cities in China which have salt production, the mineral one. They are all very special. (Link:Chinese Only)

http://www.todaydz.cn/html/20100519/1/content_1_1624.html
This is an ancient salt pan in DanZhou in HaiNan Province, China. They dry out the sea water to yield the salt on the stone. This practice has been taken for 1200 years.

Having a theme-oriented trip is good for knowing my own country and its history. What else can be a good subject? Maybe..Cotton or Wool?