This book is about the economics of life, mainly discussing that choosing a city to live has become an important choice of present life which is influenced by the global and creative economy. This choice determines nearly all aspects of our life from what kind of people we will meet to what kind of working and living circles we will be in. The book reveals how big cities promote the global economy as a new economic unit and how they form their own characteristics. It has quite reference value for China today when its economic boundary is broken.