Title: Chŏngjo wa Ch'ae Che-gong, kŭrigo Chŏng Yag-yong
Subjects: Civilization, History, Friends and associates, Friendship
Places: Korea
People: Chŏngjo King of Korea (1752-1800), Che-gong Ch'ae (1720-1799), Yag-yong Chŏng (1762-1836)
Time periods: 18th century, 1637-1864