Nowdays, our country in the third period of social transformation. It is burdened with an important mission,namely, political democratization and modernization of the country. This period is prone to see instability in society,and many social problems, such as authority identity, national belonging, Taiwan 's unification, territorial and maritime disputes, etc. The solution to these problems is fairness and justice which rely on the balance of democracy and authority. The balance is the core of a harmonious society and social democratic politics. China should deepen political reform based on t...