About Dunhuang Star Chart

The Dunhuang map or Dunhuang Star map is one of the first known graphical representations of stars from ancient Chinese astronomy, dated to the Tang Dynasty (618–907). Before this map, much of the star information mentioned in historical Chinese texts had been questioned. The map provides a graphical verification of the star observations, and are part of a series of pictures on one of the Dunhuang manuscripts. The astronomy behind the map is explained in an educational resource posted on the website of the International Dunhuang Project, where much of the research on the map has been done. The Dunhuang Star map is to date the world's oldest complete preserved star atlas.
Abbot Wang Yuanlu, discoverer of the hidden Library Cave

The Tibetan Dunhuang manuscripts

Dunhuang manuscripts refer to a wide variety of religious and secular documents in Chinese and other languages that were discovered at the Mogao of Dunhuang, China, during the 20th century. The majority of the surviving texts come from a large cache of documents produced between the late 4th and early 11th centuries which had been sealed in the so-called 'Library Cave' at some point in the early 11th century. The Library Cave was .