My respectable mentor’s meticulous guidance ranged from the topic selection to the revision of the outline to the final draft. Many ideas came out during our discussion. My respectable manner, despite his own demanding work, even collected some reference materials for me. It is due to the broad mindedness, rigorous scholarship, acute insight and unique perspective of my respectable mentor that I have gained some inspirations in writing and enjoyed great freedom in selecting topics. The expression of “sincere gratitude” is far from enough to express my thanks to my respectable mentor. Since I was directly promoted from Masters to PhD study, I didn't write my Masters dissertation. Therefore this doctoral thesis is also a small repayment for her guidance and concern. As members of my supervisory team, they gave me enormous help in both the topic selection and writing. His profound thoughts will benefit my academic career. The idea of constitutional administration was just the outcome of one of our discussions.