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This is a Korean name; the family name is Jeong.

Chung Dojeon (1342-1398), also known by the pen name Sambong, was the most powerful medieval Korean noble and politician in the early Joseon dynasty. He was also an influential Neo-Confucian ideologue and was the number one supporter and a close advisor to Taejo(King)Yi Seonggye, who founded the Joseon dynasty.

Chung was born from the noble family in Chungcheongbuk-do Danyanggun, Sambong, in the present-day of South Korea. His family had emerged from commoner status some four generations before, and slowly climbed up the ladder of government service. His father was the first in the family to obtain a high post. However, unfortunately Chung's mother was a slave, which made him very difficult to gain power in his early days. Despite his difficulties, he became a student of Yi saek and with other leading thinkers of the time such as Jeong Mong-ju, his penetrating intelligents started to effect on Korean politics.

Chung's ties with Yi Seonggye and the foundation of Joseon, were extremely close. He is said to have compared his relationship to Yi to that between Zhang Liang and Gaozu of Han. Chung's political ideas had a lasting impact on Joseon Dynasty politics and laws.

The two first became acquainted in 1383, when Chung visited Yi at his quarters in Hamgyong province.

Chung Dojeon was a major opponent of Buddhism at the end of the Goryeo period. He was a student of Zhuxi's thought. Using Cheng-Zhu Neo-Confucian philosophy as the basis of his anti-Buddhist polemic, he criticized Buddhism in a number of treatises as being corrupt in its practices, and nihilistic and antinomian in its doctrines. The most famous of these treatises was the Bulssi japbyeon ("Array of Critiques Against Buddhism" ). He was a founding member of the Seonggyungwan, the royal Confucian academy, and one of its early faculty members.

Chung was among the first Korean scholars to refer to his thought as silhak, or "practical learning." However, he is not usually numbered among the members of the Silhak tradition, which arose much later in the Joseon period.

Chung argued that the government, including the king himself, exists for the sake of the people. Its legitimacy could only come from benevolent public service. It was largely on this basis that he legitimized the overthrow of the Goryeo dynasty, arguing that the Goryeo rulers had given up their right to rule.

Chung divided society into three classes: a large lower class of agricultural laborers and craftsmen, a middle class of literati, and a small upper class of bureaucrats. Anyone outside this system, including Buddhist monks, shamans, and entertainers, he considered a "vicious" threat to the social fabric.

• Han Yeong-u. (1974). Chung Do-jeon's philosophy of political reform. Korea Journal 14(7-8). Reprinted in Lee et al. (2004), Korean philosophy: Its tradition and modern transformation, pp. 55-74. Seoul: Hollym. ISBN 1-56591-178-4

• Korean Institute of Philosophical Thought. (1995). 강좌 한국철학 (Gangjwa Hanguk Cheolhak, Guide to Korean philosophy), pp. 333-345. Seoul: Yemoon Seowon. ISBN 89-7646-032-4.

• List of Korean philosophers
• Korean philosophy
• Korean literature
• Goryeo politics
• Joseon Dynasty politics