“七·七”卢沟桥事变,是日本帝国主义全面入侵我国的开始。早在北平沦陷之前,鉴于“九·一八”事变之后我东三省图书馆轻易陷敌,大量珍贵图书资料被敌劫夺的教训,中华图书馆协会于1934年年会时,曾呈请教育部指示各地区图书馆采取措施,紧急转移,保护珍善本图书。不久国立北平图书馆便计划在北平西南山区房山建造临时疏散馆舍,以避不测,继而又将该馆善本甲、乙库几千种珍善本图书南运至上海公共租 The “July 7th” Lugouqiao Incident was the beginning of the full invasion of our country by Japanese imperialism. Before the fall of Peiping, in view of the fact that the Library of the Three Eastern Provinces of China was easy to fall into enemy land after the September 18th Incident and that a great deal of precious books and information were stolen by enemies, the China Library Association once requested the Ministry of Education to instruct it at the 1934 annual meeting All local libraries take measures to urgently relocate and protect their books. Soon the National Peking Library plans to build a temporary evacuation shelter in Fangshan, a mountainous area in the southwest mountainous area of ​​Peiping, to avoid any accident and to turn it into a rare book of thousands of rare books.