XueFu book Town

This afternoon, with one of my best friends, I went to the biggest book town of Harbin, XueFu book town.

It is a so big book store that I can find nearly any book here. But when tried to find a book of Grey System that was named as Grey System Theory and its application, there was not any of it, liked our campus book store.

However, with my friend's help I found a very good book named Chaos Time Serials Analysis and Its Application. It was wonderful. And I thought it could be used into our research areas. Because nature language was like chaos very much. Maybe there was some thing named as Chaos Language Study.

Learn it and use it.