《永乐大典》为我国古代最大的一部类书。其珍贵世人共知,不赘述。这部大书有两部抄本,即明成祖永乐七年(公元1409年)抄录完毕的原本,世称“正本”或“永乐抄本”;明世宗嘉靖四十一年至明穆宗隆庆元年(公元1562—1567年)的重录本,世称“副本”或“嘉靖抄本”。副本据正本抄录完毕后,收藏在皇史宬,到清明康熙年间才被重新发现,并已有 “Yongle Dadian” is one of the largest ancient Chinese books. A total of its precious world, do not go into details. This large book has two transcripts, that Ming Cheng Zu Yongle seven years (AD 1409) transcribed the original, the world said “original” or “Yongle transcript”; Ming Dynasty Zong Jiajing forty-one years to the Ming Mu Longzong Qing first year 1562-1567 AD) re-recorded, the world said “copy” or “Jiajing copy.” Copy According to the original copy is completed, the collection in the history of the Emperor, until the Qing Emperor Kangxi years was rediscovered and has