Introduction to the unjust death: On the evening of October 17, 1969, former Vice Chairman of the Central Committee of the Communist Party of China and President Liu Shaoqi was brutally persecuted by Lin Biao and the "Gang of Four" two counter-revolutionary groups, and was secretly escorted here while seriously ill. In November 1969 He died unjustly here at 6:45 in the morning on the 12th. This also became the largest unjust case in the history of the Chinese Communist Party.