Term used by the Soviet dictator Stalin and his supporters to define their own views as the orthodox position of Marxism as a means of refuting criticism. It has subsequently been employed by other communist parties as a yardstick for ideological purity.
The top left trigram symbolizes summer, south, and heaven. The top right trigram represents autumn, west, and the moon. The bottom right trigram stands for winter, north, and the Earth. The bottom left trigram represents spring, east, and the sun. Effective date: 21 February 1984.