The preamble affirms the achievements of the struggles of the Chinese people of all nationalities and defines the basic system ( independent and fairly comprehensive socialist system)and basic tasks(to concentrate its effort on socialist modernization.) of the state in legal form; it is the fundamental law of the state and has supreme legal authority. The people of all nationalities, all state organs, the armed forces, all political parties and public organizations and all enterprises and undertakings in the country must take the Constitution as the basic norm of conduct, and they have the duty to uphold the dignity of the Constitution and ensure its implementation.