Introduction to Qin bamboo slips: Qin bamboo slips are the general name for the bamboo slips left over from the Qin State during the Warring States Period (475 BC to 221 BC) and later the Qin Dynasty. Most of their contents are official documents and archives, recording the politics of the Qin Dynasty. , military, transportation, legal, postal, household registration and other aspects of matters. There are more than 27,000 Qin bamboo slips unearthed in Liye, which are priceless treasures.