The philosophy of Confucianism entered Korea from China, along with new religions, literatures, technologies and commercial goods. Under a policy called “tribute diplomacy”, which was a common method in ancient China. It shows their wealth by involving trading business and providing cultures with foreign nations. During the Three Kingdoms period, China was recognised as a superior nation within Asia with wide and unified territories, highly accomplished bureaucracy advanced technologies and cultures while the three kingdoms were relatively underdeveloped. It was not only because the country is geographically isolated (the peninsula is surrounded by the East Sea and the Yellow Sea). The frequent occurrence of conflicts and wars between kingdoms, lack of governmental structure were also main reasons. As a neighbourhood, the prosperity of China had threatened Korea. The three kingdoms eventually realised cultural innovations that were important in the country, therefore, in order to civilise the country, they initialled to exchange goods such as ginseng, horses, furs and hemps. In return with Chinese books, medicines, silks and so on, sought to maintain a close relationship with China. Another reason the three kingdoms decided to keep friendship with China was because in ancient Korea, Korean language was lacking writing system. Chinese characters were the only writing and reading method, thus, the spread of Chinese arts, literature, poetries and sciences enabled Koreans to gain knowledge effectively. Subsequently, Confucianism spread continually in Korea and gradually became influential.
Changes of dynasty didn’t stop the impact of Confucianism in Korea. Instead, rather than just a philosophical theory, Confucianism were transforming into a method of domination in Koryo dynasty (918-1392) and Choson dynasty (1392-1910), (the longest dynasty in Korean history). Schools and universities opened classes teaching Confucian studies. Law,