There were slaves in feudal society in China, and education was not good for slaves. Broken schools are for civilians in the government. The emergence of private schools was due to the collapse of the Zhou Dynasty system, which gave the common people and the lower class nobles the opportunity to get ahead and the demand for education.

Therefore, there is a market for private schools. The imperial examination system in Han Dynasty, Sui and Tang Dynasties and later was very prosperous. However, there was no Confucian scholar in the Wei, Jin and Jiupin Zhong Zheng, and the Han people had no way to rise. There is no alternative but military service. At that time, only the natural theories of metaphysics and Buddhism prevailed, and they were just placebos of social contradictions.

Extended data:

During the feudal society in China, landlords occupied the land, drove away the original landlords, and then rented the land to these landless farmers, who developed and cultivated it themselves and paid the land rent.

In feudal society, the natural economy was an economic structure based on land, combining agriculture with handicrafts, and taking the family as the production unit, which was self-enclosed and independent and mainly met its own needs.

Most of the key means of production in this economic structure are in the hands of landlords (or feudal lords), so a class relationship of "landlords (feudal lords) exploiting farmers" can be formed.