Bamboo slips were written materials from the Warring States Period to the Wei and Jin Dynasties. It is a long and narrow piece of bamboo (with wood chips) cut, and bamboo chips are called Jane, and wood chips are called letters or slips, which are collectively called Jane. Now bamboo slips are generally called bamboo slips. All books are written in brush and ink. The length of the book is three feet (about 67.5cm) for writing imperial edicts and decrees, two feet and four inches (about 56cm) for copying scriptures, and one foot (about 23cm) for writing letters among the people. Important discoveries have been made in Changsha, Hunan, Jingzhou, Hubei, Linyi, Shandong, and northwestern regions such as Dunhuang, Juyan, Wuwei, etc. Among them, books of the Eastern Han Dynasty were unearthed in Juyan.
Bamboo slips are actually the general name of several things, which refer to bamboo slips, wooden slips, bamboo slips and wooden slips. Before the invention of paper, bamboo slips were the most important form of books in China, which had a far-reaching impact on the book system in later generations. To this day, the terminology, writing format and writing method of books still inherit the tradition formed in the period of bamboo slips.