Based on the Sum of Eight Adjacent Points Square Difference Operator and Varying Step Search Arithmetic, A set of autofucos system has been designed and realized in this thesis.

Fundamental Policy of "Peace and Unification,One Country Two Systems" and Constructing Socialist Harmonious Society;

One China principle is the basis and prerequisite for the realization of peace and unification between the Straits.

The Cross-Straits Relations:Peaceful Development and Peaceful Reunification

Cultural identity is the basic premise of national identity and ethnic identity,national and ethnic identity is maintained and the basis for the realization of national reunification,and ultimately,national cultural identity has become an important foundation for the peaceful reunification.

Law of Anti-Division of Country is a law of peaceful reunification, which aims at preventing the division of country and promoting and safeguarding Chinese reunification in peaceful way.

The idea of peaceful unification emerged in the early Song Dynasty on the basis of constructing the new country and taking back the military power peacefully.

Chang s viewpoint of peaceful unification is "ending civil war and resisting foreign aggression".

The first generation established the guidelines for the peaceful resolution of the Taiwan problem,the second generation advanced the policy of "peaceful unification and one country,two systems",the third generation furthered the policy of peaceful unification and put forward eight proposals,and the fourth generation advanced four poin.

All these advantageous factors supply the important turn point for the peaceful unity in the new century.

It is fundamental base and premise of solving Taiwan problem and realizing the peaceful unity of our country to stick to the principle.