(December 2, 1952)
Comrade Luo Ruiqing II l:
Five documents and one map are enclosed. Please review them carefully and return them to Ye Zilong l xi. Most of these materials are already available in your office.
Based on intelligence from Northeast China, five locations in the Changbai Mountain area—covering five counties—have been identified and neutralized. In addition, the enemy is still planning to parachute into the Xiaoxing’anling Mountains and the Jiā Mountains with the aim of establishing guerrilla bases and infiltrating urban areas to carry out bombings and assassinations. It has also been reported that Ma Liang 13 1 has prepared an airfield on the grasslands, where U.S. aircraft may land. According to confessions made by enemy agents captured in Korea, enemy planes have landed near western Xinjiang, along the Xinjiang-Mongolia border, close to Garze, and in southwestern Xikang”l to pick up and drop off spies. Such activities are common among all the Soviet and new democratic countries ISi; the Soviet Union has already heightened vigilance and arrested numerous spies.
From this, it can be inferred that the enemy is likely using uninhabited regions across our country—forests, deserts, and grasslands—in provinces such as Daba Shan, Dabie Shan, Wuyi Shan, Luoxiao Shan, the Five Ridges (61, Qinling, Sui, Meng, [l]
Luo Ruiqing, who at the time served as Minister of Public Security of the Central People’s Government.
[2]
Ye Zilong, who at the time was Mao Zedong’s secretary.
[3]
Ma Liang,
a bandit leader then entrenched at the junction of Gansu, Qinghai, and Sichuan provinces.
[4]
Xikang,
an old provincial name that encompassed present-day western Sichuan Province and eastern Tibet Autonomous Region,
abolished in 1955.
[5]
referring to the Soviet Union and other new democratic countries at the time.
[6]
The Five Ridges refer to the Da’geng, Qitian, Mengjie, Dupang, and Yuecheng ridges located along the borders of Jiangxi, Hunan, Guangdong, and Guangxi provinces.

as well as in western Henan, western Hunan, Yunnan, Guizhou, Sichuan｜, Kang, Gansu, and Qinghai—to deploy helicopters and large transport aircraft for nighttime airdrops or landings. Beyond what is already known, there may be many more such operations that remain undetected. Spies could also be dropped in non-mountainous areas; reports indicate that such airdrops have already occurred near Beijing and Tianjin.
I suggest that the Public Security Command Headquarters make a special arrangement to address this issue. For example, armed plainclothes reconnaissance posts should be established in multiple locations: in the Changbai Mountain region, the Xiaoxing’anling area, the Jiā Mountains (likely referring to the Weiwujiā Mountains[I] on the map), the Inner Mongolian grasslands, the Daba Mountain range, and other mountainous areas. Each major military district and each province should set up several such posts specifically to counter enemy airdrops. During peacetime, personnel at these posts would engage in production and study; when necessary, they would immediately report any suspicious activity and apprehend enemy agents. If needed, representatives from various regions could be summoned to Beijing for a dedicated meeting.
The United States has enacted the so-called “Mutual Security Act,” allocating $100 million annually for precisely these purposes, and the airdropped spies are part of this effort.
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[1]
Weiwujiā Mountains, also known as the Yiwujian Mountains or simply the Jianshan Mountains, are located at the junction of Beizhen, Yixian, and Fuxin counties in Liaoning Province.