书札又称尺牍,即古人的书信。牍是古代书写用的木简,通常长一尺左右,故称尺牍。在古代,书信又有各种不同称谓。如写于竹上者称“简”,写于布帛上者称“帖”,写于木版上者称“札”等,因而有尺牍、书札、书帖等不同称谓。又因汉以后书信多装入封套(函)中,故又有函札之称。书札在 The book is also known as Chi Chi, the ancients letters.牍 is used in ancient writing wood, usually about a foot long, it is called 牍. In ancient times, there were various titles of letters. Such as written on the bamboo called “Jane”, written on the fabric who said “posts”, written on the wood version of the “Sapporo” and so on, so there are Ruyi, Shuzha, calligraphy and other titles. And because after Han letters and more into the envelope (letter), so there are letters Sapporo said. Books in the book