“汗青”原是“竹简”的别称,后引申为“成书”之意,亦特指史册。蔡伦造纸以前,人们写书、记史等都以竹代纸,故那时的各种“书”均被称为“竹简”。因为古人选割下来用于写字的竹子都是青色的,所以在其上面写字之前要有一道 “History” is the original nickname “bamboo slips”, after extended to “book” meaning, also refers to the history book. Before Cai Lun papermaking, people wrote books, remembering history and so on. All kinds of “books” were called “bamboo slips” at that time. Because the ancients chose to cut off the bamboo used for writing are blue, so before writing on it to have a