Confucianism was the official religion of China from 200 B.C.E. until it was officially abolished when communist leadership discouraged religious practice in 1949. The religion was developed by Kung Fu-Tzu (Confucius), who lived in the sixth and fifth centuries B.C.E. An extraordinary teacher, his lessons—which were about self-discipline, respect for authority and tradition, and jen (the kind treatment of every person)—were collected in a book called the Analects.
Some religious scholars consider Confucianism more of a social system than a religion because it focuses on sharing wisdom about moral practices but doesn’t involve any type of specific worship; nor does it have formal objects. In fact, its teachings were developed in context of problems of social anarchy and a near-complete deterioration of social cohesion. Dissatisfied with the social solutions put forth, Kung Fu-Tzu developed his own model of religious morality to help guide society (Smith 1991).
For more insight on Confucianism, read the Analects by Confucius.