The "signed raincoat" is the raincoat of a Hong Kong citizen who was in Tian'anmen Square between May and June 1989 to support the student movement; the raincoat has signatures and comments by many people who were at the Square. The item is currently housed at the Hong Kong Alliance in Support of Patriotic Democratic Movements of China's June 4th Museum.
References: Hong Kong Alliance in Support of Patriotic Democratic Movements of China.
這是一座流動的紀念碑，碑身彼此交錯地刻下了四條時間線：一、主線詳細講述1989年4月至6月發生在中國的一場規模浩大的民主抗爭運動；二、副線清晰呈現中共1949年建政以來，對社會生機一系列的鎮壓與控制，以及這種模式在八九之後如何蔓延向全球；三、八九運動推進了改變國際政治格局的蘇東劇變，因此背景線是當代全球民主自由抗爭史；四、被大歷史裹挾的個體命運的掙扎，從未隨著時光而散盡，姑且稱之為生命線。