多年来,李人毅多次对战争遗址进行实地考查,在档案馆里查找原档,并面对面采访了冒着敌人炮火起草中共《“九一八”抗日宣言》的赵毅敏、为保卫家乡勇当义勇军的王玉楼、烈士苗可秀夫人王儒贤及当时健在的慰安妇等历史见证者,掌握了珍贵的第一手资料。《国难来袭——“九一八”延续的记忆》一书记述了中日甲午陆战中,中国军队喋血平壤的惨烈场面;对赔款割辽、日俄分赃、南满铁路易主于日本、张作霖之死、以及少帅张学良易帜等重大历史事件都 Over the years, Li Renyi conducted field investigations on war sites many times, searched the archives for original documents and interviewed Zhao Yimin, who brazenly fired at the enemy’s artillery fire and drafted the “1818” Anti-Japanese Declaration of the CPC “ Wang Yulou of the Volunteer Army, Wang Ruxian, the wife of the martyr Miao Huxiu, and the comfort women who were still alive at that time master precious first-hand materials. The book ”The Memory of the Armed Terror“ - ”The Memory of 1918" describes the tragic scenes of the Chinese army’s bloody Pyongyang during the Sino-Japanese Jia Wu Maruman War; , The death of Chang Tso-lin, and the major historical events such as Miss Zhang Xueliang’s banner