Why can it become the authentic traditional culture of China?

Confucianism is a traditional religion unique to the Chinese nation. All ethnic groups living in this ancient land of China, including Liao, Jin, Yuan, Xixia, Qing Dynasty and other ethnic minorities except Han nationality, once took Confucianism as the state religion, and Confucianism became the state religion through the integration of politics and religion. Confucian theocracy and imperial power are integrated and inseparable.