 By that time he had allied himself with Jiang Qing.In Shenyang he participated the Cultural Revolution, including leading a march of Red Guards to a military instillation in the Northeast.By 1975, when Mao was ailing from complications of Alzheimer's Disease and was no longer able to attend Central Committee meetings on a regular basis, Mao Yuanxin became the Chairman's liaison with the Politburo, and he contributed to the temporary fall of Deng Xiaoping in 1976, as well as a series of other political manuoevers of the Gang of Four.