China and barbarians are distinguished by the distinction between China and foreign countries, or by the distinction between foreign summers and the prevention of foreign summers. In the history of China, there are roughly three standards to measure the difference between China people and foreigners: blood relationship, geography, dress, etiquette and other cultural standards. The purpose of distinguishing China people from foreigners is rooted in Chunqiu, as well as Yili, Zhou Li, Li Ji and Shangshu.
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In the history of China, there are roughly three standards to measure the difference between China people and foreigners: blood relationship, geography, dress, etiquette and other cultural standards.
The actual situation is that after the pre-Qin period, the standard of "distinguishing between Chinese and foreigners" was three parallel standards. When China faced a serious threat, that is, suffered a serious invasion and disaster, the viewpoint measured by blood and region generally occupied the mainstream, mainly to protect the survival of the Chinese nation.