What is the main concern of Confucianism?

Confucianism, also known as Ruism, is described as tradition, a philosophy, a religion, a humanistic or rationalistic religion, a way of governing, or simply a way of life. Confucianism developed from what was later called the Hundred Schools of Thought from the teachings of the Chinese philosopher Confucius (551-479 BCE), who considered himself a retransmitter of the values of the Zhou dynasty golden age of several centuries before. In the Han dynasty (206 BCE - 220 CE), Confucian approaches edged out the "proto-Taoist" Huang-Lao, as the official ideology while the emperors mixed both with the realist techniques of Legalism. The disintegration of the Han political order in the second century CE opened the way for the doctrines of Buddhism and Neo-Taoism, which offered spiritual explanations lacking in Confucianism.