The June 4th Incident, also known as the 1989 Democracy Movement, the 1989 Student Movement, the Tiananmen Incident or the June 4th Incident, was officially called the political turmoil at the turn of the spring and summer of 1989 [2][11], generally referring to mid-April 1989. The nationwide protest movement started with the commemoration of Hu Yaobang and was initiated by mainland Chinese college students in Tiananmen Square in Beijing and lasted for nearly two months [12][13][14][Note 4]. , that is, from the evening of June 3 to the early morning of June 4, 1989, the Central Military Commission mobilized the martial law troops of the People’s Liberation Army, the Armed Police Force and the People’s Police to carry out forceful clearing operations against demonstrations and rallies in Tiananmen Square in Beijing [15] [16] [