Four Olds
During the Cultural Revolution, many Korean cadres including Zhu Dehai were prosecuted as capitalist roaders, local nationalists or counterrevolutionists. Many faculty members of Yanbian University were also prosecuted. The number of Yanbian University’s faculty and staff decreased to 23.7% of that in 1966. Even Korean Language was criticized as Four Olds. After the Cultural Revolution ended, things gradually restored to normal.