抗日战争刚开始,郑振铎眼见许多珍贵的图书毁于战火或落入敌手,心急如焚。一些藏书家为了生计,开始将自己的藏书抛售。郑振铎见状,向当时的重庆政府呼吁抢救图书。当时的教育部部长采纳了郑振铎的意见,拨出专款200余万元,用来收购流散出来的孤本和善本。郑振铎开始了在战火中救书,并由此写了一本《求书日录》。《求书日录》里记载了他救书的一些事,其中有这样一件事:清代著名藏书家钱遵王的《也是园书目》开列了失传的元明杂剧,郑振铎对其心仪 At the very beginning of the Anti-Japanese War, Zheng Zhenduo saw many precious books destroyed by war or fallen into rivalries. Some bibliophiles began selling their books in order to make a living. Zheng Zhenduo see the case, to the then Chongqing government called for the rescue of books. At that time, the Minister of Education adopted the opinions of Zheng Zhenduo and earmarked more than 2 million yuan to purchase the solitary book and rare books that flowed out. Zheng Zhenduo began to save the war in the war, and wrote a “book sundial.” There are some things he has to save his book in the Journal of Books, one of which is the following: One of the things that happened to Qian Zuowen, the famous collector of the Qing Dynasty, also listed the lost Yuan Ming drama,