How did Confucianism impact the relationship between king and subject?

Confucianism emphasised 5 major relationships, one of which was ruler to subject. The subject was expected to serve and obey the ruler, while the ruler made it his duty to provide protection and guidance to subject. In short, I suppose you could say it strengthened the relationship by encouraging loyalty on the subject's part and good leadership on the ruler's part.

c. extended rights of citizenship to new groups