April 29, 1961
4th Bureau of the Ministry of Public Security to the People’s Armed Police Divisions of the Public Security Department, 'Investigative Report by the Yanbian Korean Autonomous Prefecture on the Outflow of Border Residents'
The 4th Bureau of the Chinese Ministry of Public Security distributes an investigative report, conducted by the Public Security Office in the Yanbian Korean Autonomous Prefecture, which cites reasons and proposes solutions for the outflow of border residents into North Korea.
March 23, 1962
Instructions from the Ministries of Foreign Affairs and Public Security on the Issue of Ethnic Koreans Crossing the Border to Korea
The Ministries of Foreign Affairs and Public Security explain North Korea's complaints regarding China's inability to effectively prevent illegal border crossings and summarize the Chinese understanding of the issue and specify instructions on resolving the issue of illegal border crossings.
September 08, 1966
Cable from the Yanbian Military District Party Committee, 'Implementing the Shenyang Military District's Opinion “Guidance on the Activities of Red Guards in the Border Area”'
With Red Guards stirring up trouble on the Sino-Korean bounder, authorities in Yanbian consider how to handle the situation.