我们知道,造纸术是两汉时期发明的。在发明造纸以前,人们曾经长时期用竹木简和缣帛作为书写的材料。因为缣帛价钱昂贵,不能大量使用。主要的官方文书、书籍、书信还是使用竹木简。先把竹子锯成圆筒,再刮成片,就成为竹简;把木材按一定规格锯成木条,再刮削成木片,就成木简。一个地区用竹简或用木简,一般情况是就地取材,产竹子的地方多用竹简,没竹子的地方多用木简。书写以前,先要在火上烘干,以防止虫蛀和腐烂。竹木简有一定的长度,如二尺四寸长的简是用来写经典、法律和国史的,一 We know that papermaking was invented in the Han Dynasty. Before inventing paper, people used bamboo and bamboo as materials for writing for a long time. Because silk is expensive, can not be used in large quantities. The main official documents, books, letters or use bamboo simple. First saw the bamboo into a cylinder, and then scraped into pieces, it becomes bamboo; the timber sawn into strips according to certain specifications, and then scraped into pieces of wood, into a simple cut. An area with bamboo slips or with wood, the general situation is to draw on the spot, where the production of bamboo with bamboo slips, no bamboo more wood Jane. Before writing, we must first fire on the drying, to prevent insects and decay. Bamboo has a certain length of Jane, such as two feet four inches long is used to write the classic, legal and national history, one