Hopanoids are natural pentacyclic compounds (containing five rings) based on the chemical structure of hopane.

By the completion of the first 5 Year Economic Plan in 1957, Mao had come to doubt that the path to socialism that had been taken by the Soviet Union was appropriate for China.

It has a large 16 pointed star (the Sun, symbolizing the Republic of Turkey) in the center, which is surrounded by 16 five pointed stars, symbolizing the 16 Great Turkish Empires in history.

These units are derived from the five dimensional universal physical constants of Table 1, in such a manner that these constants are eliminated from fundamental equations of physical law when physical quantities are expressed in terms of Planck units.