Loyalty
Loyalty is the equivalent of filial piety on a different plane, between ruler and minister. It was particularly relevant for the social class to which most of Confucius' students belonged, because the only way for an ambitious young scholar to make his way in the Confucian Chinese world was to enter a ruler's civil service. Like filial piety, however, loyalty was often subverted by the autocratic regimes of China. Confucius had advocated a sensitivity to the realpolitik of the class relations that existed in his time; he did not propose that "might makes right", but that a superior who had received the "Mandate of Heaven" should be obeyed because of his moral rectitude.
In later ages, however, emphasis was placed more on the obligations of the ruled to the ruler, and less on the ruler's obligations to the ruled.