Sinocentrism refers to the worldview that China is the cultural, political, or economic center of the world. It may be considered analogous to Eurocentrism.
Sinocentrism was a core concept in various Chinese dynasties. The Chinese considered themselves to be "all-under-Heaven", ruled by the emperor, known as Son of Heaven. Those that lived outside of the Huaxia were regarded as "barbarians". In addition, states outside of China, such as Japan or Korea, were considered to be vassals of China. However, the concept of Sinocentrism became unpopular following the humiliation of China by Western and Japanese powers in the 19th century.
Depending on the historical context, Sinocentrism can refer to either the ethnocentrism of the Han society and culture, or the modern concept of zhonghua minzu, popular among the Korean elites up to the final demise of the Qing dynasty. The concept came to an end in the 19th century and suffered several more blows in the 20th century, and as a result is not as widely popular among Chinese people in the present day.
In pre-modern times, it often took the form of viewing China as the most advanced civilization in the world, and external ethnic groups or foreign nations as being uncivilized to various degrees, a distinction known in Chinese as the Hua–Yi distinction.
The Sinocentric system was a hierarchical system of international relations that prevailed in East Asia before the adoption of the Westphalian system in modern times. Surrounding states such as Japan (which cut off its vassal relationship with China during the Asuka period, because it regarded itself as an equal and individual culture), Korea, the Ryukyu Kingdom, and Vietnam were regarded as vassals of China. Relations between the Chinese Empire and these peoples were interpreted as tributary relationships under which these countries offered tributes to the Emperor of China. Areas not under Sinocentric influence were called Huawai zhi di (化外之地; "lands outside of civilization").
At the center of the system stood China, ruled by a dynasty that had gained the Mandate of Heaven.