On September 9, 1976, Mao Zedong passed away. The Jiang Qing counter-revolutionary clique premeditatedly fabricated ``acting according to the principles laid down'' as Chairman Mao's deathbed injunction and wrote it down in the editorials of the People's Daily, the Red Flag and the Liberation Army on September 16 to propagate it far and wide, aiming to act in accordance with the erroneous principles Mao Zedong laid down in his last years.