清朝末年，因东北边患频仍，涌现出一批攻研边疆史地的学者、其中成就卓著而又亲赴俄国境内实地考察的仅曹廷杰一人。其《西伯利东偏纪要》即是侧重对东北疆域的调查分析．记述了沙俄的野蛮罪行、传达了当地各族人民回归祖国的热切愿望。他建议清政府应严密防守，坚决反击来犯 In the last years of the Qing Dynasty, because of the frequent afflictions in the northeast, there emerged a group of scholars who studied the history of the borderland, among whom only Cao Tingjie, one of the outstanding achievements who went to visit Russia in the field. The “Siberian bulletin” is to focus on the investigation of the northeast border. Described the savage crimes in tsarist Russia and conveyed the fervent desire of the people of all ethnic groups in the region to return to the motherland. He suggested that the Qing government should keep a tight defense and resolutely fight back against it