Why is it said that China's Taoism, Confucianism and Buddhism constitute the main body of classical Chinese culture

I think culture is first and foremost a manifestation of ideology, minus language, writing, customs, etc. The first manifestation is the ideological expression of the country as a whole. The primary embodiment is the ideological expression of the country as a whole.

China's thousands of years of feudal rule was based on the three schools of Buddhism, Taoism and Confucianism.

The ideology of these three schools of thought reflected the demands of the ruling class, which was the prerequisite for their survival and development.

The culture of the three schools, to a certain extent, demanded that the people submit to rule, or preached inaction and obedience. Confucianism was a tool of rule that the ruling class relied on to bind the minds of the masses. Taoism and Buddhism, on the other hand, are about coming out of the world, not competing with things, being alone, as well as helping people, enlightening the world, experiencing frustration, and finally being liberated. Fundamentally, they are the embodiment of small peasant consciousness. That is, as long as immediate benefits exist, there will be no resistance. Maximum patience.

For this reason, Buddhism, Taoism and Confucianism became the pillars of ancient Chinese cultural thought. In particular, Confucianism brought about the rule of fools and was once regarded as an orthodox culture, and Buddhism and Taoism also adhered to the non-controversy with the world and was supported by the government. The three cultures so were able to become the theme of classical culture.

Personal opinion.