Introduction to the Origin Ancient Museum: The third floor of the museum covers an area of ​​800 square meters. It uses pictures, texts, objects and models to show the historical process of the origin, invention, development and spread of printing in ancient China. The source part introduces the history and culture related to the invention of printing from 4000 BC to the 6th century. The ancient part displays the history of the invention, development and spread of printing from the early 7th century AD to 1911.