Democratic Kampuchea was the official name of Cambodia from 1975 to 1979.

The Socialist Republic of Vietnam is located in Southeast Asia.

Polyarchy refers to a political system where many people share power.

China adopts the principle of people's democratic dictatorship.

He deeply believes in the principles of socialism.

He is a perfectionist, and his approach to work is very strict.

Capitalism is a form of economy characterized by private property and the pursuit of corporate profits.

He is acting based on humanitarianism.

He always has an optimistic way of thinking.

He always takes a pessimistic view.