Answer
Lin Biao, Mao Zedong's designated successor and Minister of Defense, was implicated in a plot to assassinate Mao in September 1971. Following the failed coup attempt, Lin Biao and his family fled China, and he was killed in a plane crash in Mongolia. The Chinese government asserts that Lin Biao acted out of personal ambition and disloyalty to Mao, portraying the incident as a betrayal by a high-ranking official.