When did you start using bamboo slips?

Bamboo slips originated in the Western Zhou Dynasty; Oracle Bone Inscriptions originated in the late Shang Dynasty.

See below for details.

Bamboo slips are mostly bamboo pieces, each piece writes a line, and all the bamboo pieces of an article are woven together, which is called "bamboo slips". This is the earliest book form in ancient China, and the wood chips used for writing characters are called wooden slips, which are mostly used for writing short articles.

Bamboo slips originated in the Western Zhou Dynasty and were widely used during the Spring and Autumn Period and the Warring States Period. Around the 4th century AD, bamboo slips were replaced by paper manuscripts because of the widespread use of paper.

Written materials from Warring States to Wei and Jin Dynasties. It is cut from a long and narrow bamboo (with sawdust). Bamboo chips are called Jane, and sawdust is called letters or bamboo slips, which are collectively called Jane. Now bamboo slips are generally called bamboo slips. All the books are written with brush and ink. The length of bamboo slips in Han Dynasty is three feet (about 67.5cm) to write imperial edicts and decrees, two feet and four inches (about 56cm) to copy scriptures, and one foot (about 23cm) to write folk letters. Important discoveries have been made in Changsha, Hunan, Jingzhou, Hubei, Linyi, Shandong, Dunhuang, Juyan, Wuwei and other northwest regions. Among them, books from the Eastern Han Dynasty were unearthed in Juyan.

oracle bone script

Oracle Bone Inscriptions is one of the Chinese characters, and it is also the oldest mature character in China. Oracle Bone Inscriptions is also called Wen Qi, tortoise shell or tortoise shell animal bone. After divination with tortoise shell and animal bones, Shang people used knives to engrave the divination time, the names of the diviners and the things they divined, and some even engraved the good and bad luck that came true a few days later. However, the specific situation varies with the stage of Oracle bones. Generally speaking, the inscriptions in Wuding period are the most complete and the most abundant in existence. Scholars call this kind of record Oracle Bone Inscriptions, and this kind of writing is Oracle Bone Inscriptions. A large number of Oracle bones with Oracle Bone Inscriptions were unearthed in Yin Ruins, all of which have the basic structure of Chinese characters. A large number of Oracle Bone Inscriptions and inscriptions not only recorded the political, economic, military, meteorological and divination situation at that time, but also marked the maturity of the writing. The picture shows Oracle Bone Inscriptions carved on the tortoise shell.