Lin Biao Incident
On 13 September 1971, Lin Biao — Defence Minister and Mao Zedong's designated successor enshrined in the Party constitution — died when his aircraft crashed near Öndörkhaan in Mongolia after fleeing China with his wife Ye Qun; all nine on board were killed. The official account holds that Lin's son Lin Liguo had plotted to assassinate Mao under the codename 'Project 571,' and that Lin fled after the conspiracy was exposed. Western scholars widely contest this narrative, arguing that Lin more likely fled as Mao's purge was closing in on him. The incident fundamentally undermined the Cultural Revolution's ideological legitimacy and marked a decisive turning point in the movement's decline from its radical peak.
Lin Biao's Rise
Lin Biao had been Mao's most loyal military commander and was elevated as his designated successor in the 1969 Party constitution — the first time any Chinese leader had been officially named an heir apparent. Lin's "Little Red Book" compilation of Mao's quotations became the Cultural Revolution's defining text, and the army under his command enforced order after the Red Guard chaos. By 1970, however, tensions were developing between Lin and Mao over the role of the state and Lin's own growing power.
The Alleged Coup and Flight
According to the official account, Lin's son Lin Liguo drafted a plan (codenamed "571") to assassinate Mao. When the plot was discovered in September 1971, Lin Biao, his wife Ye Qun, and Lin Liguo attempted to flee to the Soviet Union. Their Trident aircraft crashed in Mongolia on September 13, killing all aboard. No credible survivor testimony, flight recorder, or independent investigation has ever confirmed the coup plot.
Aftermath
Lin Biao's death profoundly undermined the Cultural Revolution's claim to legitimacy: the man written into the Party constitution as Mao's 'closest comrade-in-arms and successor' had ended as a 'traitor' and 'conspirator,' plunging countless Party members and citizens who had lived through the revolution into ideological disorientation. The political consequences were complex. The military's dominance in politics was sharply curtailed, and Zhou Enlai's moderate faction gained greater room to manoeuvre in the short term, contributing to Deng Xiaoping's rehabilitation in 1973. At the same time, however, the power vacuum was exploited by Jiang Qing's faction — the Gang of Four in fact consolidated their grip on the ideological apparatus in the years that followed, until their arrest in 1976.
Narrative Comparison
| Source | Narrative |
|---|---|
| PRC Official Narrative | The official Chinese narrative classifies the Lin Biao Incident as a textbook case of 'anti-Party and anti-state crimes,' framing it within the Party's historical narrative of successive 'line struggles.' The official account holds that Lin Biao, together with his family and associates, formed a counter-revolutionary coup clique codenamed 'Project 571' to assassinate Mao Zedong; when the plot was exposed in September 1971, Lin, Ye Qun, and Lin Liguo fled and died in the crash while attempting to defect to the Soviet Union. The Tenth Party Congress of 1973 and the 1981 Party Resolution designate Lin Biao as an 'ambitious schemer,' characterise the 'Lin Biao line' as a variant of ultra-leftism, and rhetorically pair him with the Gang of Four as the two chief villains of the Cultural Revolution. The central function of the official narrative is to provide identifiable culprits for the atrocities of the Cultural Revolution while preserving the fundamental authority of Mao Zedong. |
| Western Academic Assessment | Western scholarly analysis of the Lin Biao Incident has long been constrained by the extreme scarcity of primary sources. Jin Qiu in The Culture of Power (1999), drawing on interviews with former colleagues and declassified Soviet documents, advances an interpretation that diverges sharply from the official narrative: Lin most likely fled as Mao's purge was closing in on him, rather than launching a proactive coup. Frank Dikötter and others have noted that the authenticity of the 'Project 571' documents is disputed, and that no evidence directly implicates Lin Biao himself in commanding any coup action. What scholars broadly agree on is that Lin was progressively marginalised after the 1970 Lushan Conference, where his push to restore the state chairmanship antagonised Mao; and that the truth of the crash — whether accidental, suicidal, or the result of interception — remains unresolved, with the relevant archives still largely classified. Scholars concur on the incident's historical significance: it fundamentally destabilised the Cultural Revolution's ideological edifice and marked a decisive turning point in the movement's decline from its radical peak. |
Key Milestones
- Lushan Conference Crisis: Lin Biao Pushes to Restore State Chairmanship; Mao–Lin Rift Becomes Real
The Second Plenary Session of the Ninth Central Committee opened at Lushan on 23 August 1970. Lin Biao made a strong case for restoring the state chairmanship and having Mao assume the role — a position Mao had already stated he opposed. Mao interpreted Lin's push as a bid to claim the chairmanship for himself and expand his personal power base. Mao issued warnings during the conference, the state chairmanship proposal was suppressed, and Chen Boda was purged. Although Lin nominally retained his position as designated successor, the Lushan Conference marked the beginning of a real and irreparable break in the Mao–Lin relationship, after which Mao began systematically undermining Lin's political foundations.
- Project 571 Exposed; Lin Biao Flees with Family Under Cover of Night
On the night of 12 September 1971, Lin Liguo, on learning that the alleged plot had been exposed, informed Lin Biao that flight was necessary. Lin Biao, Ye Qun, and Lin Liguo rushed to Shanhaiguan airport and forced their way onto Trident aircraft No. 256, which was inadequately prepared and low on fuel, taking off late that night. Zhou Enlai, upon receiving word, attempted to prevent the departure but the aircraft had already left the ground. Whether Lin Biao himself was aware of or consented to the flight remains one of the central disputed questions among researchers.
- Trident No. 256 Crashes near Öndörkhaan, Mongolia; All Nine on Board Killed
In the early hours of 13 September 1971, Trident No. 256 crashed on the Mongolian steppe near Öndörkhaan after traversing Mongolian airspace; all nine on board, including Lin Biao, Ye Qun, and Lin Liguo, were killed. Mongolian authorities surveyed the crash site and informed the Soviet Union. The cause of the crash remains disputed: the official account attributes it to fuel exhaustion followed by a failed forced landing, but alternative explanations include interception by Soviet or Chinese forces, or deliberate ditching by the crew. Declassified Soviet documents confirm all passengers were killed and the wreckage is consistent with high-speed ground impact, but the precise cause has never been established.
- CCP Central Committee Notification Issued; Lin Biao Formally Designated a Traitor
On 18 September 1971 the CCP Central Committee issued the 'Notification Concerning Lin Biao's Traitorous Flight,' formally declaring Lin Biao a traitor and designating him the ringleader of a counter-revolutionary clique. The notification was transmitted down through Party ranks to all members; Lin's writings and portraits were ordered destroyed or confiscated. The notification marked the official beginning of Lin Biao's political posthumous prosecution — a remarkable moment in Chinese political history in which the man named second in the Party constitution as the nation's designated successor was transformed within days from 'closest comrade-in-arms' to public enemy of the entire Party.
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